U-Bolt, Standard, Low Carbon Steel, Zinc, 1/2"-13, 1 1/2 in Thread Length, PK 50 Type / Standard Material / Low Carbon Steel Finish / Zinc Thread Size / 1/2"-13 Thread Length / 1 1/2 in Inside Length / 5 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 / 50