Manufacturer part #:7210 Technical Description Features American Metric Ø base (D) 2.95 in 75 mm Weight 0.57 lbs 260 gr SWL 5511.56 lbs 2500 kg Material S.steel AISI 316 S.steel AISI 316 Fixing screws 0.15x0.31 in 4 x 8 mm d 0.39 in 10 mm D 2.95 in 75 mm