Description Antal 80mm OPF Double Foot Block Technical Description Features Metric American Length (L) 5.43 in 138 mm Width (W) 3.15 in 80 mm Height (H) 2.24 in 57 mm Ø sheave (D) 3.15 in 80 mm Weight 1.76 lb 800 g Ø max line 0.55 in 14 mm SWL 4850.16 lb 2200 kg Fixing screws 0.16 x 0.32 in 4 x Ø8 mm Side bearing - Delrin balls Radial bearing - Composite Fibre Material - Aluminum Sheave material - Resin