33-02 Stainless Steel wire block with aluminum sheave. Bronze sheave runs on our Nomex(tm)/Teflon(tm) bearing for low friction and high safe working load. Sheave Dia. 1-1/16" (27 mm), Max Wire 1/8" (3 mm), Pin dia. 3/16" (5 mm), L 2-19/32" (66 mm), W 1-3/16" (30 mm), T 3/8" (9 mm), SWL 900 lbs. (410 kg), Weight 1.75 oz. (50 g), Max Wire 1/8" (3mm)