I repaired the threads for the brake caliper pins in one steering knuckle. It was easy and provided a very solid repair. I have no need to repair any more. This kit is like new, but has are only 8 of the original 10 coils left. I used it on a 2000 Durango 4WD, not sure what years and models have M9X1.25 thread. The repair procedure is written up in Mopar TSB 05-03-99. $25 postpaid to US.