Description
Petzl Knee Ascender KNEE GRAB
Efficient Knee Ascender for SRS Tree‑Climbing
The Petzl KNEE GRAB is a streamlined knee ascender designed to make rope ascent using SRS (Stationary Rope System) techniques significantly easier. Used in combination with the Petzl SEQUOIA PLUS or any compatible tree‑care sit harness, it provides smooth, efficient upward movement when climbing into the canopy.
Integrated PANTIN Rope Clamp
The KNEE GRAB uses the PANTIN (right‑foot) rope clamp, which ensures consistent rope capture and eliminates slippage during ascent.
A built‑in catch makes it quick and easy to install the rope into the clamp, improving workflow and setup efficiency.
Adjustable, Secure Foot Loop
The adjustable foot loop provides:
- A buckle‑optimised lower strap for secure fit around the shoe
- Optional top‑of‑shoe attachment using an accessory carabiner (e.g., MINO, not included)
This guarantees stability and energy‑efficient movement with every stride.
Fast, User‑Friendly Setup
The system is simple to configure and adjust:
- Quick attachment using MINO accessory carabiners (not included with KNEE GRAB)
- Adjustable length to suit different user heights
- Smooth rope installation into the PANTIN clamp
Perfect for climbers seeking a faster, less fatiguing ascent method.
Sustainable & Modular
The textile foot loop is available separately (spare part B022CA00), allowing worn components to be replaced without discarding the full assembly.
Specifications
- Weight: 110 g
- Minimum rope diameter: 7 mm
- Maximum rope diameter: 13 mm
- Rope type compatibility: Low‑stretch kernmantle





