Description Antal 70mm OPF Double Foot Block Technical Description Features Metric American Length (L) 4.72 in 120 mm Width (W) 2.76 in 70 mm Height (H) 1.73 in 44 mm Ø Sheave (D) 2.76 in 70 mm Weight 0.88 lb 400 gr Ø max line 0.47 in 12 mm SWL 2866 lb 1300 kg Side bearing - Delrin balls Radial bearing - Composite Fibre Material - Aluminum Sheave material - Resin Fixing screws 0.12 × 0.31 in 3 x Ø8 mm