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