OPF series, single web block with becket, sheave Ø 60, SWL 800 kg Manufacturer part #:00610 Technical Description Features American Metric Ø sheave (D) 2.36 in 60 mm Side bearing Delrin balls Delrin balls Radial bearing composite fibre composite fibre Weight 0.265 lbs 120 gr Ø max line 0.47 in 12 mm SWL 1763.7 lbs 800 kg Material Aluminum Aluminum Sheave material Plastic Plastic