Description Manufacturer part #:90.55 Technical Description Features American Metric Name Single Sheave size 1 3/4 in 45 mm Max line size 3/8 in 10 mm Overall Height 3 3/8 in 86 mm Weight 3.03 ounces 84 grams Breaking Load 2,094 lbs 950 kg Max. Working Load 816 lbs 370 kg