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Petzl Ascenders and Rope Grabs

Petzl ascenders are used in tree climbing around the world. The popular handled Ascension and the Pantin foot ascender are some of our most popular ascenders for tree climbing. All Petzl tree climbing gear is designed for top-performance and maximum safety and backed by a 3-year manufacturer guarantee.

Petzl Zigzag Mechanical Prusik


The Zigzag mechanical prusik for arborists combines all the individual pieces of gear being used in doubled rope climbing into one slick device. The Zigzag functions like a prusik, slack tending pulley, and swivel all in one.

Friction is managed by running the climbing line through the linked "zig-zag" pattern of rings. The top ring is a lever, and pushing down on this lever releases pressure in the rings, and the climber descends - just like using a prusik cord. Release the lever and the Zigzag jams, stopping descent. The climber has control over the rate of descent through varying the pressure on the Zigzag lever.

Climbing on the Petzl Zigzag is just like climbing on your prusik and pulley, but with all of your hardware integrated into a single mechanical prusik.

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Petzl Ascension Hand Ascender

Right Hand
Left Hand

The Petzl Ascension is our most popular handled ascender. The ergonomic design of the handle makes them nicer to use on long climbs. Toothed cam is easily engaged with a thumb lever. Two holes of different sizes provide attachment points for slings. Light-weight aluminum construction Makes a climbing system with the ascender foot strap and foot ascender.

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Petzl Basic Ascender


Compact rope clamp can be installed one handed. Lower holes for connecting lanyards, upper hole allows a carabiner to be attached for self belaying or hauling systems. Toothed cam. 1/2" capacity.

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Petzl Ascentree Hand Ascender


Petzl’s new Ascentree double- handled ascender is the best way to get a two fisted grip on a line. Perfect for the secured footlock or the single rope technique, the Ascentree will accept 1 or 2 legs of rope up to 13 mm (1/2”). The toothed cams can be retracted for easy installation and removal. Holes in the frame above each cam will accept carabiners for attaching prusik back-ups and keeping the cams engaged.

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Petzl Footcord Ascender Foot Strap

Petzl Footcord Ascender Foot Strap


The Petzl Footcord is a lightweight, compact, and easily adjustable foot ascender strap which can be girth-hitched directly to your ascender or used with a carabiner or quick link. The Footcord is a more compact footloop, as it is primarily cord with a reinforced webbing step. Adjustment of the Footcord is provide through a a tiny plate through which the cord passes. Pull through more or less cord to adjust the overall length of the strap to fit the tree climber. Cutting out bulky buckles and webbing let's this cord easily stuff into a pocket or pouch and brings the weight down to only 45 grams (1.6 oz). Petzl has really done a good job on this on - the minimal design and easy adjustment will make this a favorite for long SRT climbs.

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Croll Chest Ascender

S (8mm - 11mm Ropes)
L (8mm - 13mm Ropes)

Improved Croll remains the best chest ascender. When used with a chest harness, the croll keeps you upright and well-positioned. Lays flat on the chest and can be easily installed on the line one-handed. Safety catch keeps rope captured. Designed for rope ascents, the CROLL is simple to use, thanks to its pinch opening system, which is totally integrated in the clamp to avoid any snagging. The attachment holes ensure efficient positioning during ascents. It is available in two versions to adapt to different rope diameters.

  • Croll S has a 7/16" (11mm) Max rope capacity
  • Croll L has a 1/2" (13mm) max rope capacity

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Petzl Torse Strap for Croll

Petzl Torse Strap for Croll Ascender


Webbing strap enables correct positioning of the Croll chest ascender. Adjusts rapidly using the min double-back buckle. Back strap can be unclipped to remove the harness.

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Petzl Pantin Foot Ascender (2016 Model)

Petzl Pantin Foot Ascender (2016 Model)

Right Foot
Left Foot
Right Strap
Left Strap

Petzl's Pantin foot ascender has been updated in 2016 with improved performance and a separate catch which can be added to help keep the pantin on the rope during ascents. The Pantin is super-sleek and low-profile, and quick to get install and remove from the rope, and easily adjustable with friction buckles. Works with ropes from 8mm to 13mm. Weighs only 3 oz.

Replacement straps are also available to help keep your ascender in top shape.

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Petzl Pantin Catch

Petzl Pantin Catch

Right Catch
Left Catch

Catch for PANTIN foot ascender, helps to keep the rope in the device during rope ascents. It is available for PANTIN in right- and left-foot versions.

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Tibloc Ultra-light Emergency Ascender


Ultra-light and very compact ascender for rope ascents, hauling systems or friction knot replacement in self-rescue situations. TIBLOC has an automatic system that presses the carabiner against the rope to start the braking action on the rope. (8-11mm). Weighs 35 g. Updated in 2018!

Petzl Technincal Notice for Tibloc

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Petzl Shunt

Petzl Shunt Ascender


Replaces self-jamming knots like the prusik and Klemheist. The cam is a smooth bar, not toothed, which prevents the rope from being damaged when loaded suddenly. Because it accepts single or double rope, the Shunt is ideal for use in the secured footlock technique. 7/16" capacity.

Technical notice from Petzl for user's of the shunt as a backup device: Read the alert on Petzl's website.

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