Swing sided pulley for emergency useThe Oscillante weighs practically nothing and can be used in crevasse rescue systems or improvised hauling systems.* Quick and easy installation due to swinging side plates* Nylon sheave and aluminium side plates for excellent strength to weight ratio.Breaking strength: 15 kN Working load : 2 kN x 2 = 4 kN.For use on rope of diameter 7 - 11 mm.Weight: 42 g