Description Antal 100mm OPF Double Foot Block Technical Description Features Metric American Length (L) 6.38 in 162 mm Width (W) 3.94 in 100 mm Height (H) 2.44 in 62 mm Ø sheave (D) 3.94 in 100 mm Weight 3.64 lb 1.65 kg Ø max line 0.63 in 16 mm SWL 7716.17 lb 3500 kg Fixing screws 0.20 x 0.39 in 5 x Ø10 mm Side bearing - Delrin balls Radial bearing - Composite Fibre Material - Aluminum Sheave material - Resin