Standard U-Bolt Standard U-Bolt 304 Stainless Steel Finish Plain Thread Size 3/8 In.-16 Thread Length 1 1/4 in Inside Length 4 1/8 in Inside Width 3 1/2 in Pipe Size (In.) 3 in Characteristics Has Coarse Rolled Threads for Steel or Wrought Iron Pipe Sizes Includes 2 Nuts Package Quantity 10