XXL series, single web block, sheave Ø 250, SWL 20000 kg Manufacturer part #:910.255 Technical Description Features American Metric Ø sheave (D) 9.84 in 250 mm Side bearing Delrin balls Delrin balls Radial bearing composite fibre composite fibre Weight 22.818 lbs 10,35 kg Ø max line 1.57 in 40 mm SWL 44092.5 lbs 20000 kg Material Aluminum Aluminum Sheave material Aluminum Aluminum