“selftightening”

Ascenders | Rock Climbing Guide

Search this site: Rock Climbing Guide Ascenders Jumar Jumar is a simple device which is used instead of the selftightening knot(prusik) to ascend a fixed single rope. It moves when you push or pull it upwards and it blocks if you stop or try to pull it downwards. It is made of a light aluminium alloy. There are jumars with a handhold or without one which are for the waist. Jumar is much more handy than selftightening knots and very fast for rescues. Its only disadvantages are that it