I bought these for my 1997 F250 after reading many reviews saying they work well but I don't understand how anyone keeps them. I spoke to a Dorman representative and he was confused as well. There is a tapered "ring" that is supposed to hold/grip the lug nuts, but it's soft metal and it's tapered, it's only a matter of time before it falls off. For me it was less than 5 minutes in my entrance. It might fit another style of rim, but all the specs showed it should have worked for mine. Just my $0.02