Description Antal 50mm OPF Single Block Technical Description Features Metric American Ø sheave (D) 1.97 in 50 mm Side bearing - Delrin balls Radial bearing - Composite Fibre Weight 0.198 lb 90 g Ø max line 0.39 in 10 mm SWL 1.323 lb 600 kg Material - Aluminum Sheave material - Resin Shackle Mod. - 055SS