Description Antal OPF Block D100 Single + Long Head D10 L25 OPF series, single block sheave Ø100 Technical Description Features Metric American sheave (D) 3.94 in 100 mm SWL 7716.18 lb 3500 kg max line 0.63 in 16 mm Shackle Mod. - 010HR Side bearing - Delrin balls Sheave material - Resin Radial bearing - Composite Fibre Material - Aluminum Weight 1.65 lb 750 g