Standard U-Bolt, Standard U-Bolt, Steel, Finish Plain, Thread Size 3/4 In.-10, Thread Length 4 in, Inside Length 13 13/16 in, Inside Width 10 7/8 in, Pipe Size (In.) 10 in, Characteristics Has Coarse Rolled Threads, for Steel or Wrought Iron Pipe Sizes, Includes 4 Hex Nuts