You will receive 1 new Pro Comp U-bolt kit! This is commonly used in various Pro Comp lift kits. These were removed from a brand new kit. Please verify the size before ordering! Fitment Guide: FORD ---F-250 / F-350 Super Duty 1999-2010 (4x4) Specifications: ---Set of 4 U-bolts w/ hardware ---Thread size: 5/8" - 18 ---ID width: 3.55" ---ID length: 14.5" ---Bend: Round.