It's not just the Ford ones that are a problem. Chrysler, GM, Toyota, or anything that uses the POS 2 piece lug nuts are a problem. I had to buy a 19.5mm, 21.5mm, and a 23mm socket to deal with some of them, and even then it is not easy once they have been abused, and over torqued a few times. After you beat a socket on the nut, then you have to beat on them some more to get the socket off. I hate them!!! Then if the cover is missing you have a new problem.