This pocket-sized wonder has beautifully rounded edges and flush axle ends for ideal use around life safety ropes. It is recommended that OVAL shaped carabiners be used with the Pinto Pulley. The frame is hot-forged 7075-T6 anodized aluminum supporting heat-treated stainless-steel spindle. Tensile Strength: 11,240 lbs. (50 kN) WLL: 2,248 lbs. (10 kN)