Mechanical back up device for abseiling, works on either single or double ropes. Can also be used as an ascender.
The shunt has long been used as a self belay device for top roping, however Petzl no longer recommend it for this use. Petzl instead recommend a Mini- traxion for this purpose.
Suitable for ropes: 10-11mm (single) and 8-11mm (double)
Weight: 188g
