Description Antal 120mm OPF Single Swivel Block Technical Description Features Metric American Ø Sheave (D) 4.72 in 120 mm Weight 2.43 lb 1.10 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 Shackle Mod. - 012HR