U Bolt With Top & Bottom Backing Plate – Pair Technical Description Features American Metric Rod Size 5/16 in 8 mm Fixing Hole Centre 2 1/64 in 51 mm Height 2 61/64 in 75 mm Thread Length 55.11 lb 25 kg Weight 4.05 oz 115 g Inside Diameter 1 11/16 in 43 mm