The Greenlee 650 Hook-Type Sheave features a 6″ (152.4 mm) steel frame with forged-steel closure hooks (1″ opening) and a 5″ (127 mm)-wide aluminum alloy sheave on self-lubricating bearings. Designed for cable-pulling applications, it has a minimum bend radius of 1½″ (38.1 mm) and is rated to 4,000 lb (17.8 kN) capacity.