Description Manufacturer part #:89.04 Technical Description Features American Metric Roller Diameter 1.338 in 34 mm Overall Length 3.779 in 96 mm Overall Width 1.417 in 36 mm Total Thickness 0.826 in 21 mm Minimum Rope Thickness 0.314 in 8 mm Breaking Force 1543.2 lbs 700 Kg Maximum Working Load 661.38 lbs 300 Kg