However unlikely it is to occur, the thought of a tethered chain saw being snatched from the hands of a climber, perhaps not fully secured to his work position, is enough to compel a healthy number of sales of this popular lanyard. Having a tear-away feature designed to activate at 200 lbs. of force, the chances are high that the saw will depart alone - however it is not guaranteed. 2 N 1 BREAKAWAY BUNGEE CHAINSAW LANYARDS