OPF series, single web block with becket, sheave Ø 100, SWL 3500 kg Manufacturer part #:01010 Technical Description Features American Metric Ø sheave (D) 3.94 in 100 mm Side bearing Delrin balls Delrin balls Radial bearing composite fibre composite fibre Weight 1.058 lbs 480 gr Ø max line 0.63 in 16 mm SWL 7716.2 lbs 3500 kg Material Aluminum Aluminum Sheave material Aluminum Aluminum