A mechanical replacement for self-jamming knots (Prussik, Machard...). Positioned below a descender, the Shunt acts as a back-up belay for an abseil descent. It locks onto the rope as soon as you release it and follows your descent when you press on it. For use on single rope (10 to 11 mm) or double (8 to 11 mm). 188 g CE, UIAA
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