U-Bolt Round Bend Low Carbon Steel Finish Hot Dipped Galvanized Thread Size 1/2-13 Thread Length 1-5/8 In. Inside Length 4-1/2 In. Inside Width 3 In. For Pipe Size 2-1/2 In. Characteristics Has Coarse Rolled Threads For Square Form Connections. Includes U-bolt 2 Hex Nuts