33-40 Eye Jaw wire Block. Perfect for use on runners, backstays or any area requiring strong wire support. Aluminum sheave runs on Nomex(tm)/Teflon(tm) bearing for high load/low friction application. Sheave Dia. 4" (102 mm), Max Wire 1/4" (6 mm), Jaw Opening11/16" (18 mm), Pin dia. 5/8" (16 mm), L 7-17/32" (191 mm), W 4" (102 mm), T 15/16" (24 mm), SWL 7500 lbs (3402 kg), Weight 2 lb 8 oz. (1.13k g)