I believe that is what they are called. I have a set of Craigar SSs on my 65 and they aint no fun to put on if you take them off. I had a lug on one of the rears some how freeze comming off and I ended up snaping the stud, andon one of the fronts, I almost had the right wheel installed the last lug was almost all the way tight then it jammed and I ended up stripping the stud while backing it off. So simple in concept but so difficult in real life. I have never had such trouble with any wheel in my 44 years! If they did not look so good installed, I'd make geranium planters out of them! Now I'm done, tommorow I have to buy a new fron stud.