Manufacturer part #:7214 Technical Description Features American Metric Ø base (D) 3.9 in 99 mm Weight 1.5 lbs 0.68 kg SWL 10141.26 lbs 4600 kg Material S.steel AISI 316 S.steel AISI 316 Fixing screws 0.15x0.39 in 4 x 10 mm d 0.55 in 14 mm D 3.9 in 99 mm