ACDelco Gold Semi-Metallic DuraStop Severe Duty Brake Pads ACDelco Gold Semi-Metallic Disc Brake Pads are formulated with steel strands to provide strength and conduct heat away from the rotor’s surface while offering quality braking power. ACDelco Gold Semi-Metallic Brake Pads are designed to meet OE standards for fit form and function and they are engineered to help resist corrosion and premature wear. Independently tested using D3EA and SAE J2784 standards ACDelco Gold Semi-Metallic Brake Pads offer exceptional performance and include noise-dampening shims where applicable. Features and Benefits: Designed for towing or extreme braking environments Chamfered slotted and shimmed to provide similar fit form and function of the OE service part Hardware clip kits included (where applicable) Tested to D3EA SAE2784 standards to help assure quality