While they work and are probably best used with an impact resistant torque wrench, they just didn't last long on me. I had two cracks on the side wall of the socket and tightened the nuts in one go. One of them was his first assignment! The other lasted for several cars as I used it in the shop. I'm a bit surprised to see all the positive reviews, maybe I just got a bad batch. Also, they are the same size as a regular socket with a plastic sleeve on the outside to protect the rim. So if you have a small gap you will need to remove the guard to fit the bushing, eliminating the scratch guard on the rim.