ACDelco Parking Brake Shoes are high-quality replacements for worn factory shoes. These bonded brakes deliver strong braking power while reducing noise and vibration. The chamfer angle and vane configuration follow the OE design. Also no machining is required. ACDelco Advantage Parking Brake Shoes are ready to be installed right out of the box. Warning: Automobile parts, accessories and ancillary chemicals contain chemicals known to the state of California to cause cancer, birth defects and other reproductive harm. Wash hands after using.