This is the Dura Grip positive traction unit for the 9.25 Dodge Chrysler rear used in RAM 1500 trucks, Dakotas, and Durangos. Top quality unit from one of our "Offshore" suppliers. Much more rugged than the original traction-loc that comes with these trucks, and at a more favorable price than the O.E. unit that is somewhat problematic. We stock both brands in case you wish for an O.E. part, we do have the genuine unit too, but we feel this is as good and in some areas, BETTER! Both units will deliver positive traction to BOTH rear wheels with tire smoking delivery if you choose to do so. IN STOCK, ready to go.