ITEM NAME:20KN / 2000kg Mountaineering Pulley, Belay Device, Climbing Description: Material: 7075 aerospace aluminum Maxium Strength: 20KN/4500lbs Fit for maxium diameter of rope: 12mm Axis: Approx. 1.57 inch/4 cm Height: Approx. 3.14 inch/8 cm Width: Approx. 1.96 inch/5 cm Color: wine red Package Includes: 1 Â x Climbing Pulley.1 x Climbing Pulley. People always bought together with. Color: wine red.