Description Antal 140mm OPF Single Swivel Block Technical Description Features Metric American Ø sheave (D) 5.51 in 140 mm Side bearing - Delrin balls Radial bearing - Composite Fibre Weight 3.7 lb 1.68 kg Ø max line 0.79 in 20 mm SWL 15432.3 lb 7000 kg Material - Aluminum Sheave material - Aluminum Shackle Mod. - 014HR