I bought a used 2003 Toyota Celica with nice rims and eye catching paintwork. I have to have it parked in a bad spot so I bought them to add a little extra security (along with the Viper alarm system and a 507m tilt sensor that interfaces with the alarm system). I have no mechanical tools. So I drove to a local mechanical shop and had a guy install it for $10, which I would suggest if you are in similar circumstances.