I was looking for these to replace the Ford F150 mounting nuts which were rusting and swelling under the aluminum cap. The wrench supplied by Ford no longer fit the swollen nuts and left me on the mountain when I had a flat tire! These replacement parts should last forever as they are not designed to be useless Ford nuts. They fit perfectly, fit in the wrench and look great. Very satisfied. My friends who have F150 are all ordering them now.