U-Bolt, Low Carbon Steel Material, Zinc Plated Finish, 2-1/4 In. Length, 4-1/2 X 6-1/2 In. Size, Internal-4-1/2 In. Diameter, NC Rolled Machine Thread, 2 Nuts, Hex Nut Type, 2-1/4 In. Thread Length, 6-1/2 In. Height, 4 In. Pipe Diameter, 1/2 In. Thread Diameter