Dixon® 4-Bolt Clamp, series: Boss™, 1 in Inside dia, 1-34/64 to 1-46/64 in Outside dia, 2-7/8 in Length, 3-1/8 in Width, 9/16 in Hex Bolt, 21 ft lb, Iron Band, Zinc Plated, Domestic. Dixon® BU14 Boss™ 4-Bolt Clamp, 1 in ID x 1-34/64 to 1-46/64 in OD, Iron Band