U-Bolt Round Bend Low Carbon Steel Finish Hot Dipped Galvanized Thread Size 7/8-9 Thread Length 4-1/4 In. Inside Length 19-5/16 In. Inside Width 16-1/8 In. For Pipe Size 16 In. Characteristics Has Coarse Cut Threads For Steel Wrought Iron Pipe Sizes Includes U-bolt 2 Hex Nuts