They replaced the TRD anti-theft nuts on my Rock Warrior wheels that had failed on others. I didn't want that to happen to me so I bought them. Some have mentioned that they are a bit longer than the originals and they are right. However, it is so slight that you will never notice it. I'm pretty anal, so if they don't bother me, they probably won't bother you either. They are made by the same manufacturer that supplies the original jam nuts. And you can use the multi-tooth socket adapter that came with your truck!