The Petzl Shunt BO3 Back-Up Device/Ascender is a back-up rope clamp.

Used below the rappel device, the Petzl Shunt works as a rappel back-up and replaces self-jamming knots like the Prusik.

It works on both single and double ropes.

Features

• Easy to install on rope
• Smooth clamping surfaces won't damage rope
• May be used to ascend single or doubled rope

Specification

• Weight: 188 g
• Material: Aluminium frame
• For use on single ropes 10-11 mm or double ropes 8-11 mm
• 3-year guarantee
• CE EN 567/UIAA