Description Manufacturer part #: 12.74 Technical Description Features American Metric Name Triple Sheave size 2 1/4 in 57 mm Max line size 7/16 in 12 mm Overall Height 4 1/4 in 109 mm Weight .4.3 ounces 122 g Breaking Load 4,409 lb 2,000 kg Max. Working Load 1,851 lb 840 kg