Description Antal 100mm OPF Single Web Block w/ Becket Technical Description Features Metric American Ø sheave (D) 3.94 in 100 mm Weight 1.32 lb 600 g Ø max line 0.63 in 16 mm SWL 7716.17 lb 3500 kg Side bearing - Delrin balls Radial bearing - Composite Fibre Material - Aluminum Sheave material - Resin