I bought these nuts to replace the lock nuts that came with my new Lexus. I keep losing my lock nut wrench so I decided to replace them with regular nuts. I bought them and after about 7 months all 4 showed signs of rust. So now I have 4 original Lexus nuts, nice and shiny, and one nut on each wheel that is rusty. I'm disappointed in Dorman as I buy their other auto products and have had no problems. I will be replacing these rusty nuts with Lexus Original Equipment nuts that will not rust in less than a year. These nuts are not OEM quality.