Raybestos ATD931P Advanced Technology Semi-Metallic Disc Brake Pad Set Application specific brake pad formulations resist thermal breakdown, maintain high performance levels and perform quietly regardless of service type usage Application specific noise dampening shims stay in place for the service life of the friction Slots and chamfers optimize cooling and suppress noise Nitrile-polymer coated abutment clips maximize noise suppression Integral electronic wear sensors are included where applicable Application specific shims for lowest noise and longest life Quiet coated hardware for maximum noise suppression Advanced formulations to deliver increased stopping Power Electronic wear sensors Vehicle specific slots, chamfers ensure quiet operation