FOR FREE: I have a used set of Oreilly ceramic brake pads that just came off this weekend. I'd say about half gone, maybe more. They still have the groove in the middle. The rotors were starting to warp a bit. I decided to swap the rotors and pads. These are free if you come get them. I will throw them out if no one wants them. http://www.oreillyauto.com/site/c/d...=Search_C0068_1432597_3245&pt=C0068&ppt=C0009