Description Antal 50mm OPF Halyard Block Vertical Fix Technical Description Features Metric American Length (L) 3.39 in 86 mm Width (W) 0.75 in 19 mm Height (H) 2.56 in 65 mm Sheave Diameter (D) 1.96 in 50 mm Side Bearing - Delrin balls Weight 0.165 lb 75 g Max Line 0.39 in 10 mm A 0.75 in 19 mm SWL 1323 lb 600 kg Material - Aluminum Sheave Material - Resin Fixing Screws 0.08 x 0.24 in 2 x Ø6 mm