Description Antal 50mm OPF Double Foot Block Technical Description Features Metric American Length (L) 3.62 in 92 mm Width (W) 1.97 in 50 mm Height (H) 1.50 in 38 mm Ø sheave (D) 1.97 in 50 mm Side bearing - Delrin balls Radial bearing - Composite Fibre Weight 0.43 lb 194 g Ø max line 0.39 in 10 mm SWL 1.323 lb 600 kg Material - Aluminum Sheave material - Resin Fixing screws 0.12 x 0.24 in 3 x 6 mm