A traditional, robust and easy to use belay/rappel device made of hot forged alloy. It is compatible with single ropes, half ropes and twin ropes. Suited for rigging and rescue. 4153131 Rope Diameter 5/16" - 7/16" | 7.7 mm - 11 mm MBS 7863 lbs | 35 kN Weight 0.29 lbs | 132 g Standards EN15151-2