OPF series, single block, sheave Ø 50, SWL 600 kg. Available with cam cleat (Mod. 00501/C) Manufacturer part #:00501 Technical Description Features American Metric Ø sheave (D) 1.97 in 50 mm Side bearing Delrin balls Delrin balls Radial bearing composite fibre composite fibre Weight 0.198 lbs 90 gr Ø max line 0.39 in 10 mm SWL 1322.8 lbs 600 kg Material Aluminum Aluminum Sheave material Plastic Plastic Shackle Mod. 005SS 005SS