Block and Tackle with Anchor Hook Cat. No. 258 Klein Tools 1802-30 These are NOT occupational protective hooks. NOT for human support Light, galvanized-steel shell blocks are fitted with snubbing hooks to hold the load Sheaves are strong yet lightweight aluminum alloy with all-bronze bushings Forged hook Cat. No. 258 All Klein block and tackle use high-quality, 3/8-Inch (10 mm) diameter rope