I just bought these rotors for my car. I thought all I needed to run the bigger 10" rotors were the different carriers but apparently I was wrong. They are brand new and you can even see the date on the receipt which says "shipped on 8/12/09". Bought from MJM. Just trying to get back what I paid for them since they are brand new. The factory coating is still on them, never even cleaned. Someone help me out with these because they are useless to me!