The Gemini's design enables the use of a Prusik friction hitch which prevents the hitch from entering the pulley mechanism, increasing safety and convenience.Highly efficient and lightweight, it's suitable for setting up hauling or load deviation systems. Sheave mounted on sealed ball bearings for excellent efficiency Extremely lightweight and ultra-compact Material(s): aluminium side plates, aluminium sheaveWeight: 135gMinimum rope diameter: 7mmMaximum rope diameter: 11mm Efficiency: 91%Sheave diameter: 25mmWorking load: 6kN (1.5kN on one strand)Breaking strength: 23kN