Description Antal 120mm OPF Single Web Block Technical Description Features Metric American Ø Sheave (D) 4.72 in 120 mm Weight 1.81 lb 820 g Ø max line 0.71 in 18 mm SWL 11023 lb 5000 kg Side bearing - Delrin balls Radial bearing - Composite Fibre Material - Aluminum Sheave material - Aluminum