U Bolt With Top & Bottom Backing Plate – Pair Technical Description Features American Metric Rod Size 15/64 in 6 mm Fixing Hole Centre 1 1/2 in 38 mm Height 2 9/32 in 58 mm Thread Length 55.11 lb 25 kg Weight 1.90 oz 54 g Inside Diameter 1 17/64 in 32 mm