These are replacement trac bar bushings that are used in Rusty's Trac Bar Adjustable BLACK End, this end is a fabricated steel end that has been welded. These bushings are to be used in the Rusty's BLACK Screw in (seen in picture). Screw in is not included and is only for visual verification of the correct bushing needed. Simply look at the back of the bushing; the part number will be molded into it. Applications: XJ, ZJ, TJ, LJ, MJ, WJ. The kit includes two bushing halves and a 1/2" ID sleeve.