Durable And Lightweight Pulley. Designed And Optimized For Use With A Prusik Friction Knot. Attachment Point Accepts Up To Three Carabiners. Ball Bearings And Large Sheave Diameter For High Efficiency. Diameter Of Sheave 48 Mm. Bottom Attachment Point: 12 K N. For Use With Static And Dynamic Ropes. Unique Production Number.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }