Description Antal 70mm OPF Halyard Block Vertical Fix Technical Description Features Metric American Length (L) 4.76 in 121 mm Width (W) 0.98 in 25 mm Height (H) 3.50 in 89 mm Ø Sheave (D) 2.76 in 70 mm Weight 0.40 lb 180 g Ø max line 0.47 in 12 mm SWL 2866 lb 1300 kg Side bearing - Delrin balls A 0.98 in 25 mm Material - Aluminum Sheave material - Resin Fixing screws 0.08 × 0.31 in 2 x Ø8 mm