Description Antal 120mm OPF Double Foot Block Technical Description Features Metric American Length (L) 7.28 in 185 mm Width (W) 4.72 in 120 mm Height (H) 2.91 in 74 mm Ø Sheave (D) 4.72 in 120 mm Weight 5.25 lb 2.38 kg Ø max line 0.71 in 18 mm SWL 11023 lb 5000 kg Side bearing - Delrin balls Radial bearing - Composite Fibre Material - Aluminum Sheave material - Aluminum Fixing screws 0.20 × 0.39 in 5 x Ø10 mm