Standard U-Bolt,Zinc-Plated Steel,5/16″-18 Thread Size, 2InchInside Width/Diameter, 6 PackConditon:* New, Surplus Stock. Additional Notes:* Thread Size: 5/16″-18* NO Nuts Included* Inside Height: 2-11/16 Inch* Material: Steel* Finish: Zinc-Plated* Inside Width/Diameter: 2 Inch* For Pipe Size: 1-1/2 Inch* Thread Length: 1 Inch* System Of Measurement: Inch* Cushion Material: None* Thread Type: Coarse* Center To Center Width: 2-5/16 Inch* Made In North America: No* Dimensional Standards: ASME B18.31.5* UNSPSC: 31161616UNKRP20182