Description Antal 70mm OPF Halyard Block Up-Down Technical Description Features Metric American Length (L) 4.65 in 118 mm Width (W) 0.98 in 25 mm Height (H) 3.31 in 84 mm Ø Sheave (D) 2.76 in 70 mm Weight 0.44 lb 200 g Ø max line 0.47 in 12 mm SWL 2866 lb 1300 kg Side bearing - Delrin balls A 0.55 in 14 mm Material - Aluminum Sheave material - Resin Fixing screws 0.08 × 0.31 in 2 x Ø8 mm