Description Manufacturer part #: 23.21 Technical Description Features American Metric Sheave Diameter 2 1/4 in 57 mm Max line size 9/16 in 14 mm Overall Height 4 11/16 in 119mm Weight 9.3 ounces 263 g Breaking Load 3,196 lbs 1,450 kg Max. Working Load 1278 lbs 580 kg