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