Petzl Knee Ascender Knee Grab

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