The Greenlee 441-4 Cable Feeding Sheave is built for 4″ conduit, featuring a yoke-frame that slides into the conduit end to support the sheave while cable rolls smoothly across it. The 5″ (127 mm)-wide aluminum alloy sheave is mounted on self-lubricating bearings for durability and ease of use. It’s rated for up to 6,500 lb (28.9 kN) at low angles of pull.