Product Details: Prepare your semi to be Ready for the Road Ahead™, with the ConMet Brake Rotor Service Kit that improves front or rear brake performance. Thanks to its ability to restore the rotor to its original condition, this rotor repair kit is able to harmonize the rotor, caliper, and brake pads to actuate the brakes. Crafted with precise standards to properly return the air brakes to their original working condition.