I decided to spend my extra dollar and buy a set of heat treated nuts. My set arrived exactly as described. The ring nuts definitely look chrome as opposed to the blunt nuts Ford put on my car. The fit is great although it looks a little longer than my standard mum although there isn't much of a difference in sizing. The car came with 19mm nuts and I think they should be 3/4" but the spare wheel wrench worked on my car. Check yours before you need them. Don't forget to order another wheel lock key when you receive your wheel lock number ($10.50 from the manufacturer). I read somewhere that 3/4 " = give or take 19.05 mm