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Treeworker Deluxe Knee Ascender The Treeworker Deluxe Knee Ascender is hand crafted in-house and designed to support efficient rope ascent in arbor...
Climbing Technology Quick Step A Foot Ascender with Lock Out Lever - Right The Climbing Technology Quick Step A Foot Ascender with Lock Out Lever i...
Petzl Pantin CLICK Foot Ascender – Right The Petzl Pantin CLICK Foot Ascender – Right is designed to make rope ascents more efficient and less phys...
DMM Tendon The DMM Tendon is a streamlined solution for lifting knee ascenders, designed to improve efficiency and consistency during rope ascent. ...
Petzl Croll Chest Ascender The Petzl Croll Chest Ascender is a compact and reinforced rope ascender designed to support efficient rope ascents in p...
DMM Tendon Elastic 1.5M The DMM Tendon Elastic 1.5M is a genuine replacement component designed to support the ongoing maintenance of DMM Tendon sy...
ISC Stryder Foot Ascender - Right The ISC Stryder Foot Ascender - Right has been developed following extensive feedback from professional industry ...
Climbing Technology Quick Step Strap Heel Replacement Kit The Climbing Technology Quick Step Strap Heel Replacement Kit is designed to maintain re...
Arbpro Gemini Spur Ascender - Right The Arbpro Gemini Spur Ascender - Right is a foot ascender designed to assist rope ascents while climbing with...
Petzl Pantin Catch The Petzl Pantin Catch is a dedicated accessory designed to improve rope retention when using a PANTIN foot ascender during rope...
Petzl Pantin CLICK Foot Ascender – Left The Petzl Pantin CLICK Foot Ascender – Left is designed to make rope ascents more efficient and less tiring...
HAAS Velox Clip - N - Go Knee Ascender The HAAS Velox Clip - N - Go Knee Ascender is designed to provide arborists with a fast, efficient, and high...
HAAS Velox Knee Ascender The HAAS Velox Knee Ascender is a refined evolution of the original HAAS ascent system, designed to deliver smoother, more...
Climbing Technology Quick Step Undersole Strap Replacement Kit The Climbing Technology Quick Step Undersole Strap Replacement Kit is designed to re...
Climbing Technology Cric Multifunctional Rope Clamp The Climbing Technology Cric Multifunctional Rope Clamp is a compact and highly versatile devic...
Climbing Technology Roll N Lock Multi-Function Device The Climbing Technology Roll N Lock Multi-Function Device is an ultra-light and compact solut...
Climbing Technology Quick Step A Foot Ascender with Lock Out Lever - Left The Climbing Technology Quick Step A Foot Ascender with Lock Out Lever i...
CAMP Otto Standard Figure of 8 Descender The CAMP Otto Standard Figure of 8 Descender is a compact aluminium alloy descender designed for controlle...
CAMP Turboknee Knee Ascender The CAMP Turboknee Knee Ascender is a highly efficient climbing aid system developed to support smooth and controlled ...
CAMP Turbofoot EVO Foot Ascender - Right The CAMP Turbofoot EVO Foot Ascender - Right is a refined progression aid designed to deliver high efficie...
CAMP Turbochest Chest Ascender The CAMP Turbochest Chest Ascender is a highly advanced progression device designed to deliver smooth, efficient rop...
Arbpro Gemini Knee Magnetic Deluxe Harness Storage Assembly The Arbpro Gemini Knee Magnetic Deluxe Harness Storage Assembly is designed to provide ...
Arbpro Gemini Spur Ascender - Left The Arbpro Gemini Spur Ascender - Left is a foot ascender designed to assist rope ascent while climbing with sp...
Arbpro Gemini Knee Ascender The Arbpro Gemini Knee Ascender is an innovative solution designed to improve efficiency and ease of movement during ro...
Edelrid Foot Cruiser Foot Ascender The Edelrid Foot Cruiser Foot Ascender is a sophisticated progression device designed to support efficient rope ...
Petzl Ascension Hand Ascender Right The Petzl Ascension Hand Ascender Right is designed for efficient and controlled rope ascent during professiona...
Petzl Knee Ascent Clip Knee Ascender The Petzl Knee Ascent Clip Knee Ascender is a purpose-built knee ascender assembly designed to support efficie...
DMM Tendon Tube Clip Kit The DMM Tendon Tube Clip Kit is a dedicated spare parts solution intended to support the ongoing maintenance of DMM Tendon...
At Height DW3 Drill Winch Pro Powered Ascender The At Height DW3 Drill Winch Pro Powered Ascender is a compact, drill-powered device designed for l...
At Height RG50 Rescue Genius 3:1 Mechanical Advantage Device The At Height RG50 Rescue Genius 3:1 Mechanical Advantage Device is a simple and effic...
ISC Stryder Foot Ascender - Left The ISC Stryder Foot Ascender has been developed following extensive feedback from professional industry users. Du...
Climbing Technology Quick Arbor H Double Hand Ascender The Climbing Technology Quick Arbor H Double Hand Ascender is designed to support efficient ...
Climbing Technology Quick Roll Hand Ascender with Integrated Pulley - Right The Climbing Technology Quick Roll Hand Ascender with Integrated Pulley...
Climbing Technology Quick Roll Hand Ascender with Integrated Pulley - Left The Climbing Technology Quick Roll Hand Ascender with Integrated Pulley ...
FTC Ascent SRT Kit The FTC Ascent SRT Kit is a compact and lightweight solution developed to support efficient Single Rope Technique ascents for ar...
FTC NATE Foot Loop The FTC NATE Foot Loop is designed for arborists who want to improve ascent efficiency while reducing physical strain during lon...
Ascenders and descenders play a key role in modern arborist climbing systems, helping climbers move efficiently through the canopy while maintaining control and positioning at height. Whether ascending into the tree using stationary rope techniques (SRT), managing movement during work positioning or carrying out controlled descents, these devices can improve efficiency, reduce physical effort and streamline day-to-day climbing operations. Our collection includes professional arborist ascenders, descenders and rope access devices suitable for a wide range of tree climbing applications.
Modern climbing systems often combine multiple devices to create an efficient and versatile setup. Ascenders are primarily used to aid upward movement on the rope, allowing climbers to conserve energy during long ascents. Descenders are designed to provide smooth, controlled movement when descending or repositioning within the canopy. Some devices combine both functions, offering arborists greater flexibility and reducing the amount of equipment required within the system.
When selecting an ascender or descender, it is important to consider rope compatibility, climbing technique and intended use. Different devices are designed for specific rope diameters and climbing methods, while others may be optimised for SRT systems, work positioning or rescue applications. Understanding how a device integrates with the rest of the climbing system is essential for achieving safe and efficient performance.
The best device will depend on the climbing method and the tasks being performed. Arborists who regularly use SRT systems often prioritise efficient rope access and smooth ascent, while those focused on positioning and movement within the canopy may require devices that offer controlled adjustment and easy operation. Weight, ease of use, maintenance requirements and compatibility with existing equipment should all be considered before making a selection.
Ascenders and descenders are typically used alongside climbing ropes, tree climbing harnesses, carabiners and connectors, mechanical friction devices, friction hitches and prusiks and other professional arborist equipment. Ensuring compatibility across the entire climbing system helps maximise performance and user confidence when working at height.
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