Pivot Pin Kit, Challenger I-500 wheel lift with 2″ x 3″ crossbar. Includes (1) RB0125, (1) RB0109 Pivot Pin Collar, (1) RB0205 Pivot Pin Bushing , and (1) HD0480 Pivot Pin Retaining Bolt. 2 1/2″ diameter pivot pinPivot Pin is held in place with a collar and allen head bolt on the bottomFits RB0150 crossbar