14 best jumar ascenders

Jumar ascenders are mechanical devices commonly used in climbing and mountaineering to aid in ascending ropes. They are essential tools for climbers and are particularly useful in situations where ascending a rope is necessary, such as during rock climbing, caving, tree climbing, or rescue operations. Jumars, named after the French climber Pierre Allain who invented them, provide a reliable and efficient means of ascending vertical or near-vertical ropes.

Here are some key features and information about jumar ascenders:

  1. Design: Jumar ascenders typically consist of a handle, a toothed cam, and a grip. The cam engages the rope when weighted, preventing it from sliding downward and allowing the user to move upward while maintaining their position on the rope.

  2. Usage: To use a jumar ascender, climbers attach it to a harness or chest harness using a carabiner. One jumar is typically used for each hand, allowing the climber to maintain a balanced and controlled ascent.By alternately gripping and releasing the handles, climbers can "jumar" up the rope.

  3. Types: There are various types of jumar ascenders available, including mechanical ascenders and traditional rope clamps. Some modern models may also feature ergonomic grips and safety mechanisms.

  4. Safety: When using jumars, it is crucial to ensure they are correctly attached to the harness and the rope. Climbers should also regularly inspect their gear for signs of wear and damage. Additionally, using a backup or safety system is advisable in case the primary ascender fails.

  5. Applications: Jumar ascenders are widely used in a variety of climbing disciplines, such as rock climbing, alpine climbing, and big-wall climbing. They are also used in industrial rope access and rescue operations.

  6. Training: Climbers should receive proper training on how to use jumar ascenders safely and effectively. This training often includes techniques for ascending, descending, and transitioning between the jumars and other equipment.

  7. Maintenance: Regular maintenance of jumar ascenders is essential to ensure their reliability and safety. This includes cleaning, lubricating moving parts, and inspecting for signs of wear.

Jumar ascenders are valuable tools for climbers, enabling them to efficiently and safely ascend ropes in challenging environments. However, it is crucial to use them correctly and maintain them properly to ensure a safe climbing experience.

Below you can find our editor's choice of the best jumar ascenders on the market
  

NewDoar Hand Ascender Rock Climbing Tree Arborist Rappelling Gear Equipment Rope Clamp for 8~12MM Rope

MT

Based on 850 reviews Check latest price
  • [Safty Guarantee]: CE 1019-435 EN 567:2013 ensures its security.Hand ascender you can trust.Weight limited:140kg/ 308Ib,Breaking strength8.5KN.Tension:4KN,for 8~12MM Rope.
  • [Light Weight Ascender]:The aluminum alloy frame is light yet durable,Weighs only 0.52 lbs (237g)
  • [Great Grip]: Comfortable rubber handle adds the friction and protects climber's hand.
  • [Solid Stainless Steel Cam]: Made of stainless steel, rustproof and anticorrosion, can handle most situation and service for long.
  • [Multiple Holes]: For connecting carabiners and webbings. 2 hole attachments in both upper and lower side of ascender to let operator put to great use.

User questions & answers

Question: I can't remove it from my climbing line now. Don't you just pull down on the metal tab, then pull towards the grip
Answer: I believe you want to push toward the rope
Question: I have a rope that is 0.39 diameter, will this work with this rope Matt
Answer: Assuming 0.39 inches -- that converts to 9.9 mm so 10 mm rope.
Question: Can any type of rope be used as long as the diameter is within the reccomended range
Answer: No. You’d want to use a rope specifically designed for climbing, although sailing rope is also capable. Like your typical Home Depot rope has a core made out of paper towel, and shouldn’t be trusted with your life.
Question: Is there a weight limit to this
Answer: yes, the max weight limit is 900 pounds

Product features

NewDoar Hand Ascender

NewDoar Hand ascender is widely used for tree climbing, Single Rope Technique Climbing (SRT climbing) and tensioning / rigging / hauling / pulley system.

Working Principle:

Cams installed allow device to move smoothly along rope upward or in the arrow mark direction but clamp to rope when pulled in the opposite direction.

Solid Safety Catch

The safety catch has spring inside and allows operators to easily use it with a thumb. It ensure to quickly install and remove rope effortless.

Sharp Teeth

Due to material's great property, cam can handle most situation and service for long. Large teeth also works well even in icy or wet condition.

Great Grip Handle

The rubber handle offers great grip and protects hand from getting hurt. The rubber has features of abrasion resistance and wet skid resistance.

Paliston Climbing Hand Ascender for Rock Climbing Arborist (Right and Left) for 8~12 mm Rope

Paliston

Based on 170 reviews Check latest price

Product description



Product Description

Material: Aluminum Alloy

Rope diameter: 8 - 12 mm

Weight: 240g / 8.47oz

Maximum Loading: 4kN / 900lb

Color: Red (Left) / Blue (Right)

Certification(s): CE1019 EN567



●With ergonomic design of the handle, this ascender is possible to be used on long term climb.

●Made from hot forged aluminum alloy, it features lightweight but sturdy.

●Paliston hand ascender can be easily locked open or closed with one thumb due to the spring on the cam.

●Multi holes provide attachment points for connecting with other equipment.

2 Years Guarantee. You can definitely buy with confidence.

  • Paliston hand ascender is elaborately designed for ascending a rope, perfect for rock climbing, tree climbing, arborist and any other ascension activities.
  • The ergonomic construction gives you a large and comfortable handle to hold on and can be installed with one hand, also gives it an excellent purchase on rope from 8 - 12 mm.
  • The climbing ascender moves smoothly up the rope but cam grips rope securely when weighted. The rope cam is also applicable to hold even on dirty, muddy or icy ropes.
  • The ascender is easy to stowed when you've got your expected height or prepare to descend.
  • 2 Years Guarantee. Paliston strives to offers quality hand ascender with a reasonable price.

User questions & answers

Question: This is a pair for the price
Answer: Yes, you get left hand and right hand for that price.
Question: Will this ascender be strong enough to hold a 200 pound man
Answer: yes, the weight limit is 4kn which equals 900lb.
Question: How does this ascender compare with other brands? I found some ascenders and they look same
Answer: Sure they are the same quality, but this one gets a lower price
Question: I see 12mm is max rope size marked on device. So i must ask: should these work just fine on my 1/2" rope (12.7mm
Answer: we use these on 7/16- 11mm rope i think you need the bigger one for 13mm rope

PETZL Ascension Gold Ascender Yellow Right

PETZL

Based on 272 reviews Check latest price

Product description

Handled rope clamp for rope ascents, the ASCENSION features an overmolded grip and ergonomic upper part for a comfortable and powerful grip when pulling with one or two hands. The ASCENSION handled rope clamp has a wide lower hole for easily attaching two carabiners for a lanyard and foot loop.

  • The overmolded dual-density grips have an area for the index finger and a wide, supportive base to keep the hand from slipping. This shape ensures a comfortable and powerful grip, increasing efficiency when ascending a rope
  • Ergonomic upper part to maximize power when pulling with two hands
  • The safety catch allows the handled rope clamp to be installed or removed anywhere on the rope with one hand. It is easily manipulated, even with gloves
  • Wide lower hole allows the carabiners of the lanyard and FOOTAPE or FOOTCORD footloop to be easily attached
  • Yellow for Right-handed use

User questions & answers

Question: How much weight can this support
Answer: The Petzl ascension is certified to the EN 567 standard that says 4kN (900lbs) static load without destroying the device or rope. The key is static load. The device can withstand higher static loads to about 6kN (1350lbs), but any dynamic load applied from 4kN (900lbs) to 6kN even for a millionth of a second will eat your rope to shreds. The general rule is toothed cam devices eat rope at 4kN (900lbs), so don't use it as a rope grab, fall arrester, or progress capture unless you really know what your doing. The EN12841 type B standard tests show that it will handle dynamic loads over 4kN (900lbs), but it becomes very depended on what type / age of rope is used. Its a hand ascender for body weight (static loads), if your using it for something else consider another device.
Question: What diameter rope is this for? ca i use it with 12-strand arborist climbing rope, 1/2" by 150' blue ox rope
Answer: It will accept 8mm to 13mm rope - Arborist rope will be fine.

Petzl - ASCENSION, Ergonomic Handled Ascender

Petzl

Based on 90 reviews Check latest price

Product description

Handled rope clamp for rope ascents, the ASCENSION features an overmolded grip and ergonomic upper part for a comfortable and powerful grip when pulling with one or two hands. The ASCENSION handled rope clamp has a wide lower hole for easily attaching two carabiners for a lanyard and foot loop.

  • INTENDED USE: Designed for ascending a rope.
  • SIMPLE AND EFFECTIVE: Ergonomic molded handle allows a comfortable yet powerful grip. Wide opening allows the handle to be easily grasped, even with thick gloves.
  • PROTECTION: Safety catch is totally integrated into the body of the ascender to help prevent snagging.
  • BEATS THE ELEMENTS: Toothed cam with self-cleaning slot optimizes performance under any conditions (frozen or dirty ropes...).
  • ATTACHMENTS: Wide lower hole allows the carabiners of the CONNECT ADJUST lanyard and FOOTAPE or FOOTCORD foot loop to be easily attached.

User questions & answers

Question: Left vs left hand
Answer: Hi there! They are the same thing, different sellers have just listed it under two different names
Question: I assume the price quoted is for a pair of ascenders (i.e. a lefthand and a righthand device) and not just a single ascender? yes or no
Answer: Check the specs. I bought them separately and I still believe the price is individual. Still, keep in mind: Do you really need both? I originally bought them and after trying to ascend my arms got tired. Now I use one combined with the chest ascender. Way easier!

SZCQ SRT Climbing Hand Ascender Aviation Light Alloy Mountaineering Rock Ergonomic Rappelling Gear Equipment Left Handled Ascender Arborist Tree Climber Rigging

SZCQ

Based on 130 reviews Check latest price
  • Upgrade Hand Handled ascender, Black for right hand, Orange for left hand, Both UIAA and CE Certified, widely used for tree climbing, Single Rope Technique Climbing (SRT climbing) and tensioning / rigging / hauling / pulley system.
  • SOLID Rubber Ergonomic Handled Ascender Safety Catch - No more slippery! ☆☆☆ Rather than metal material, the safety catch made of solid rubber allows any operator to easily manipulate the cam system with thumb. Increased friction let you have a firm control even with thick gloves.
  • ERGONOMIC Thermo-Molded Rubber Handle! ☆☆☆ As we know, right grip makes the highest efficiency of force. The ergonomic thermo-molded rubber handle and its ample inner space provide excellent comfort according to your grip habit to keep from fatiguing even in a long time single rope climbing.
  • POWERFUL Stainless Steel Cam! ☆☆☆ The function cam is made of stainless steel to have a firm grip even in icy or wet condition. Due to material's great property, cam can handle most situation and service for long.
  • This climbing ascendar adopts aviation aluminum magnesium alloy which is high strength, anti-rust, durable and withstand 4KN

Product features

Safety: CE 1019-435 EN 567:2013 ensures its security.

  • Light Weight Ascender:The aluminum alloy frame is light yet durable,Weighs only 0.52 lbs (237g)
  • Great Grip: Comfortable rubber handle adds the friction and protects climber's hand.
  • Solid Stainless Steel Cam: Made of stainless steel, rustproof and anticorrosion, can handle most situation and service for long.
  • Multiple Holes: For connecting carabiners and webbings. 2 hole attachments in both upper and lower side of ascender to let operator put to great use.

Solid Stainless Steel Cam

Due to material's great property, cam can handle most situation and service for long. Large teeth also works well even in icy or wet condition.

Solid Safety Catch

The safety catch has spring inside and allows operators to easily use it with a thumb. It ensure to quickly install and remove rope effortless.

Rope compatibility: 8~12mm

Hand ascender you can trust.Weight limited:140kg/ 308Ib,Breaking strength8.5KN.Tension:4KN,for 8~12MM Rope.

Hand ascender is widely used for tree climbing, Single Rope Technique Climbing (SRT climbing) and tensioning / rigging / hauling / pulley system.

  • ✔ Weight: 240g / 8.47oz
  • ✔ Certification(s) : CE 1019 EN567
  • ✔ Max load:4kN / 899 lbs
  • ✔ Handle cover:Rubber
  • ✔ Cam / pivot: Stainless steel
  • ✔ Main body:Aluminum Alloy
  • ✔ Color: Red -Right Hand

Great Grip Handle

Ergonomic rubber handle:Comfortable ergonomicrubber handle adds the friction and protects climber's hand,great grip and protects hand.

Suitable Size

The ergonomic thermo-molded rubber handle and its ample inner space provide excellent comfort according to your grip habit to keep from fatiguing even in a long time single rope climbing.

Wide Use

This hand ascender rope clamp is widely used for tree climbing, Single Rope Technique Climbing (SRT climbing) and tensioning / rigging / hauling / pulley system.rescue, aloft work, engineering, caving, etc.

Top Quality

Use the best material for your outdoor using

Red Right Hand

Red

Black Right Hand

Black

Orange Left Hand

Orange

Blue Right Hand

Blue

Ito Rocky Climbing Gear Ascender and Rappelling Descender Belay Devices for 9-12mm Rope for Rescue & Arborist

Georsh

Based on 181 reviews Check latest price

Product description

Self braking in case of accidental loss of descent control. Sensitive handle enables smooth descent without harmful rope twisting. Also suitable for work at a height and for emergency self evacuation.



Specification:

  • Suitable for ropes of diameter of 9-12mm/0.35-0.47 inch

  • Load: 150KG/330 LB

  • Material: Aluminum magnesium alloy

  • Size (L x W): Approx. 8.27 * 2.17 inch

  • Color: Blue



    Warm Tips:

  • We provide 90-day warranty !

  • If you have any questions, please contact us and we will reply within 24 hours.

    • Material:Aluminum magnesium alloy. Size: 2.17"(W) * 8.27"(L), Net Weight: 1.04 lb.
    • CE Certification, EN 341. Max Load:150 kg/330 lb. Suitable for 9-12mm/0.35-0.47 inch dia.
    • Easy to Install:Device can be rapidly installed or removed from the rope without disconnecting it from the harness.
    • Design makes it good for descending tight passages,suitable for teach use.Self-breaking function allows you to easily stop and hold your position on rope.
    • Suitable for rock climbing, mountaineering, exploring, rappelling, rescue, engineering protection, aerial work etc.
  • User questions & answers

    Question: Can you Ascend Freely? Also will it stop you from falling
    Answer: It will not ascend with a 12mm rope. It has an anti panic cam that, unfortunately, locks in when you try to ascend. It descends wonderfully, will not ascend on larger rope....if any. Also, it DOES stop completely, with no creep. And I am 225+ gear.
    Question: Can it be used in gear for fire fighters, will iy withstand some heat
    Answer: Generally speaking, keeping away from fire is more important! We tested it on 80ft drop at speed of 1ft / s for 3 times, Observed maximum temperature increase was 58deg Fahrenheit, 69F outside temp, 127F the descender temp. From the results, the faster the decline, the higher the temperature. I found nylon and polyester ropes have a melting point about 450F on the technical website, Some information Tom Jones sent stated the maximum usable temperature should be 194F Conclusion: From the data, it seems unlikely Descender can generate enough heat to damage the rope when stopped if the melting point is used but we shouldn't follow this. Using the limit Tom provided on a hot day (100+ F) it probably possible to reach the limit, but you'd have been going very fast. At the same time we do not approve of dropping more than 330ft uninterruptedly Repeat once more: keep the rope away from the fire!
    Question: Is there a weight limit to this
    Answer: Yes, the max weight limit is 900 pounds.
    Question: Can’t seem to figure out how to tighten up the slack in the rope. It wants to lock up every time I try to pull on it
    Answer: This device is not designed to be used as an ascent device. It’s just as hard to pull in slack as it is for the line to run out when descending.

    Black Diamond Index Ascender, Right-Handed

    Great Lakes MP

    Based on 13 reviews Check latest price

    Product description

    A robust workhorse for jugging in all conditions, the Black Diamond Index Ascender's trigger-finger release allows for hassle-free operation, while its molded grip makes for easy maneuverability and control.

    • Synthetic
    • Black Diamond Equipment: Designing and constructing the world's best climbing, skiing & mountain gear since 1957

    kissloves Climbing Hand Ascender Outdoor Mountaineering Tree Arborist Climbing Rappelling Equip Hand Ascender for 8-12MM Rope Left Right Hand Ascender

    Wildken

    Based on 176 reviews Check latest price

    Product description

    Hand Ascender 8mm-12mm Rope for Rock Climbing Mountaineering

    Specification:

    Material:Magnesium alloy

    Certification(s) : CE 1019

    Size (L x W): Approx. 8.26 x 3.38 inch /21 x 8.6 cm.

    Rope Size: Ø 8~12mm

    Weight: 240g / 8.47oz

    Package included: 1 x Right Hand Ascender 8mm -12mm Rope

    Attention:

    It is necessary to receive adequate training (knowledge of techniques and security measures) before using the tools. Incorrect use or improper maintenance could lead to serious accidents even fatal. Please read carefully or learn enough knowledge before use.

    Feature:

    Hand ascender for rope ascents and a wide, over molded ergonomic handle for a comfortable and powerful grip. The aluminum alloy frame is light yet durable and has a long rope channel for better performance on traverses. The ergonomic thermo-molded handle provides good insulation and aids grip when wet. Improving ease of climbing by giving you a large handle to hold and allowing the device to get a purchase on the rope rather than having to grip with your hand. This reduces the strength needed to grip the rope, and lets you have more endurance left to climb.

    Ascender slids up smoothly while gets stopped when move in the opposite direction by tooth cams

    Designed in a optimum size and shape, the ascender is quite easy to store away when reach the desired height or prepare to descend.

    For using with ropes of diameter 8-12 mm.

    • Powerful and Durable : Hand ascender for rope ascents and a wide, over molded ergonomic handle for a comfortable and powerful grip. The aluminum alloy frame is light yet durable and has a long rope channel for better performance on traverses
    • Ergonomic : The ergonomic thermo-molded handle provides good insulation and aids grip when wet. Improving ease of climbing by giving you a large handle to hold and allowing the device to get a purchase on the rope rather than having to grip with your hand. This reduces the strength needed to grip the rope, and lets you have more endurance left to climb
    • Easy to Use : The climbing Ascender is Designed in a optimum size and shape, the ascender is quite easy to store away when reach the desired height or prepare to descend
    • Rope Compatibility : 8~12mm, Multiple holes provide many attachments for connecting with other equipment
    • Widely Use : The Hand Ascender is Perfect for big wall or mountaineering endeavors, tree climbing, Single Rope Technique Climbing and tensioning / rigging / hauling / pulley system

    User questions & answers

    Question: Can I use this to stop and hold my weight static
    Answer: Yes you can. I use two of these to climb the mast on my sailboat. Usually I have all my weight (~200 lbs.) on just one of these when I’m doing mast work.
    Question: How much will this support
    Answer: I weigh in at 208#s with a 5 # bag and have had no issues. It seems to me the load with an 8 to 10 mm line is 220.4 lbs. and with a 10 to 13 mm line is 308.6 lbs. Don't use cheap line, as it could make the difference between making it home or not!
    Question: Those teeth look sharp does it wear out the rope pretty quick
    Answer: I use these for climbing the mast of my sailboat. I've only gone up about 6 or 7 times, I have not noticed any adverse effects in the line, however I didn't specifically looked for it.
    Question: does it work with a 12.7 mm rope
    Answer: Yes it does

    Climbing Technology Quick'Up+ Ascender, Right Hand

    Climbing Technology

    Based on 28 reviews Check latest price

    Product description

    Right-hand light alloy ascender handle with ergonomic rubber grip for climbing ropes.

    • New Overmoulded, Ergonomic Handle Ascender, Designed For Greater Efficiency When Pulling And Increased Resistance To Wear And Tear
    • Cam Opening Lever Usable With One Hand
    • Steel Cam, Manufactured With Technology That Implements The Resistance To Wear And Tear
    • Two Attachment Holes For Various Possible Uses, Anti-Inversion Cam System, Secondary Hole For Connecting A Muglia Rapider For An Terrier

    User questions & answers

    Question: Someone in the reviews mentioned a down climb feature. How does that work
    Answer: With weight on a chest ascender or some other device, you can depress the toothed cam from the top of the device, allowing you to slide it down. Repeat this process with the chest ascender and you've climbed down. Repeat this many (many) times and you'll make some headway without a changeover to a descent device.

    CroSight Hand Ascender Rock Climbing Tree Arborist Rappelling Gear Equipment (Right and Left) for 8-13MM Rope 5KN Load CE Certified

    CroSight

    Based on 103 reviews Check latest price
    • More Safe: Maximum Loading is up to 5KN, Certification(s): CE1019 EN567. Multiple holes provide many attachments for connecting with other equipment. Widely used for Single Rope Technique Climbing (SRT climbing) and hauling/pulley/ rigging /tensioning system.
    • Convenient Climbing: Comfortable rubber handle of CroSight Hand Ascender reduces the strength needed to grip the rope so that you have more endurance left to climb.
    • Easy to Use: The climbing ascender is designed with an optimum size and shape, It is Very easy to store away when you reach the target height. Novices will soon learn to use.
    • Beats The Elements: Toothed cam with self-cleaning slot optimizes performance under any conditions (frozen or dirty ropes). It won't hurt the rope. Solid rubber increased friction let you have a firm control even with thick gloves.
    • After-sales Support: CroSight provide high quality products and life-long services for our customers. If you have any questions, please feel free to contact us and we will response within 8 hours.

    User questions & answers

    Question: i did not receive instructions with order please send instructions. thanks
    Answer: No offense, but you should first get some training if don't know how to use it. This is for your safety.
    Question: What size is the big hole at the bottom
    Answer: The diameter of the big hole is 0.630inches /16mm and the small one is 0.433inches/11mm.
    Question: Are you selling both the right hand and left hand devices at this price
    Answer: I only got one.
    Question: Can I descend with this product
    Answer: This product is designed for ascent, you may need a professional descender

    Product features

    CroSight Hand Ascender(Left and Right Hand)

    Hand ascender working principle: Cams installed allow device to move smoothly along rope upward or in the arrow mark direction but clamp to rope when pulled in the opposite direction.

    CroSight ascender is widely used for tree climbing, Single Rope Technique Climbing (SRT climbing) and tensioning / rigging / hauling / pulley system.

    Good ascender will stir up the highest efficiency of force

    reduce direct friction of safety catch and ascender body to have a longer service life.

    Easy to Use

    Tow hole design, can be used to connect the oxtail and belt.

    More Safe

    Hot forging aluminium magnesium alloy, high strength. Maxim load is up to 5KN.

    Beats The Elements

    Powerful stainless steel cam can easily handle ICE and WET condition and won't hurt the rope.

    Convenient Climbing

    Comfortable rubber handle adds the friction and protects climber's hand.

    JINGYAT Hand Ascender for Rock Climbing Tree Arborist (Right or Left) Rappelling Gear Equipment Rope (8~12MM) Clamp

    JINGYAT03079

    Based on 77 reviews Check latest price
    • Elaborately designed for ascending a rope, perferct for rock climbing, tree climbing, arboritst and any other ascension activities.
    • Rather than grip the rope with bare hand, Hand ascender much facilitate single rope climbing by giving a large and comfortable handle to hold.
    • The ascenders move smoothly up the rope but cam grips rope securely when weighted. The rope cam is also applicable to hold even on dirty, muddy or icy ropes.
    • Designed in a optimum size and shape, the ascender is quite easy to store away when you reach the desired height or prepare to descend.
    • Multiple holes provide many attachments for connecting with other equipment

    User questions & answers

    Question: does it also work for descending
    Answer: No ascending only
    Question: Does it easily slide up and down rope for working on a roof and will it stop a fall
    Answer: Slides easily but is not meant to stop falls

    Product features

    JINGYAT Hand Ascender

    Elaborately designed for ascending a rope, perferct for rock climbing, tree climbing, arboritst and any other ascension activities.

    MOUNTAINEERING
    QUICK DROP
    CAVES

    Climbing Technology Quick Roll Ascender, Right Hand, Orange

    Climbing Technology

    Based on 32 reviews Check latest price

    Product description

    Innovative handle ascender with integrated pulley. Used in conjunction with a self-braking descender it allows for ascending the work rope. Ideal for placing protection.

    • New Overmoulded, Ergonomic Handle Ascender, Designed For Greater Efficiency When Pulling And Increased Resistance To Wear And Tear
    • Cam Opening Lever USAble With One Hand
    • Steel Cam, Manufactured With Technology That Implements The Resistance To Wear And Tear
    • Two Attachment Holes For Various Possible Uses, Anti-Inversion Cam System, Secondary Hole For Connecting A Muglia Rapider For An Terrier

    User questions & answers

    Question: Does this ascender have the real ansi stamp
    Answer: Yes
    Question: What rope thickness does it support
    Answer: 10mm to 13mm
    Question: On this ascender its marked 10-13mm and 8-13 mm is it safe to use on 8.5mm rope
    Answer: It fits within the parameters but I would be more comfortable with something thicker. I'm assuming you rock climb or cave. I work in the tree industry and use 10.5-13mm and it works great. The 3-to-1 factor is excellent with no additional equipment. Good luck and stay safe.

    Zeluga HALRSETBO Quick Up Double Hand Ascender for Both Hand, Blue/Orange

    Product description

    Zeluga Quick Up Double Hand Ascender for both Hand. Hand Handled ascender much facilitate single rope climbing by giving a large and comfortable handle to hold. Rather than grip the rope with a bare hand, the climber could hold the ascender and let the device to get a purchase on the rope. Ascender slides up smoothly while gets stopped when moving in the opposite direction by tooth cams. Designed in an optimum size and shape, the ascender is quite easy to store away when you reach the desired height or prepare to descend. Multiple holes provide many attachments for connecting with other equipment. Quick 'UP is suitable for ropes of diameter of 8-13cm. Perfect choice for big wall or mountaineering endeavors. Work Load 4 kN / 900 LBF. Includes one right hand and one left hand ascender. Made in Taiwan.

    • Hand Handled ascender much facilitate single rope climbing by giving a large and comfortable handle to hold
    • Rather than grip the rope with a bare hand, the climber could hold the ascender and let the device to get a purchase on the rope
    • Ascender slides up smoothly while gets stopped when moving in the opposite direction by tooth cams
    • Designed in an optimum size and shape, the ascender is quite easy to store away when you reach the desired height or prepare to descend
    • Multiple holes provide many attachments for connecting with other equipment

    NewDoar Rock Climbing Chest Ascender Abdominal for Vertical Rope Climbing CE Certified Rope Clamp for 8~13MM Rope

    SUT

    Based on 78 reviews Check latest price
    • [Safty Guarantee]: CE1019 & EN 567 ensures its security, Rope: for use with single ropes between 8 and 13mm.
    • [Light Weight Ascender]: The aluminum alloy frame is light yet durable, Weighs only 0.34lbs (157.6g), Weight limited: 140kg / 308Ib, Breaking strength: 4KN. Tension: 4KN, Length: 3.15 ’'(8cm) 4.57” (11.6cm) high
    • [Powerful and Durable]: Solid Toothed cam made of stainless steel and with self-cleaning slot optimizes performance under any conditions (e.g. frozen or dirty ropes), Magnesium alloy forging cam has better resistance to corrosion. Magnesium alloy forging wear plate for improved durability.Multiple Holes: For connecting carabiners and webbings.
    • [Application Strategy]: Used with a BASIC ascender or with an ASCENSION handled ascender for rope ascents. Open the catch by pinching for simple, quick manipulation. NewDoar Chest Ascender with 2 hole attachments in both upper and lower side of ascender to let operator put to great use,excellent grip in compact shape, much improving ease of climbing with no need to grip rope with your hand.
    • [Wide Range of Uses]: for mountaineering, ascending a rope, tree climbing, indoor & outdoor climbing, rock climbing, outward band, fire rescue, arborist, pully system, working on the higher level etc.

    User questions & answers

    Question: How much weight can this support
    Answer: The maximum breaking strength is 4kN/890lb.
    Question: Does it lock when you let go
    Answer: It has to be anchored by both ends, which made this option coimplicated for a novice like me . Try looking at the Petzel "shunt" as another option.
    Question: Description says 8-13mm, picture says 8-12mm
    Answer: It is 8-13mm. I run 1/2" all the time
    Question: Can you use this on your safety rope as a fall arrest?usually what do use with the ascender
    Answer: No a chest descender isn't designed for primary life support when climbing or during a fall. It's main function is to help keep your climbing rope closely confind to your chest when you are using it in conjunction with a hand asenceder attached to a foot loop and a foot ascender. Using all 3 together will give you the advantage of quickly ascending a climbing rope using the rope walking technique. The main drawback is that you can't quickly descend in an emergency situation. You will need some extra gear such as a Petzl Rig to changeover when you need to descend. Watch this video to see an example: https://youtu.be/xHjFD1qjf1Y

    Product features

    NewDoar Chest Ascender

    NewDoar chest ascender is widely used for tree climbing, Single Rope Technique Climbing (SRT climbing) and tensioning / rigging / hauling / pulley system.

    It provided excellent grip and release your hand. The sharp teeth clamp rope tightly to keep safe. This chest ascender helps smoothly climbing up.

    Solid Safety Catch

    The safety catch has spring inside and allows any operator to easily manipulate with a thumb. Easy operating catch allows quickly install and remove rope from the hand ascender effortless.

    Large Teeth

    Large teeth on this chest ascender helps efficiently stop by rubbing rope and the chest ascender. The slot will exhaust sand to make sure it also works well in wet or mud conditions.

    High Quality

    Made of high quality aluminium magnesium alloy including the black cam, high strength, light weight, abrasion resistance. Mature electro-plating technique casts never-peel-off color.

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