Description Antal 140mm OPF Single Web Block Technical Description Features Metric American Ø sheave (D) 5.51 in 140 mm Side bearing - Delrin balls Radial bearing - Composite Fibre Weight 2.4 lb 1.11 kg Ø max line 0.79 in 20 mm SWL 15432.3 lb 7000 kg Material - Aluminum Sheave material - Aluminum