Description Antal 70mm OPF Single Swivel Block Technical Description Features Metric American Ø Sheave (D) 2.76 in 70 mm Weight 0.44 lb 200 g Ø max line 0.47 in 12 mm SWL 2866 lb 1300 kg Side bearing - Delrin balls Radial bearing - Composite Fibre Material - Aluminum Sheave material - Resin Shackle Mod. - 006HR