The PowerStop Z47 MD and Fleet semi-metallic pads are designed as an upgrade over stock brakes to provide long lasting performance for vehicles running full GVW on a daily basis. These brake pads are made with a semi-metallic formula, infused with carbon-fiber to strengthen the compound and provide maximized uptime and reduced cost-per-mile for medium duty and last mile fleets. Friction is mechanically attached to the backing plate for maximum shear resistance. Premium stainless-steel hardware is included with the Z47 brake pads making it easier to complete your brake job. Use Z47 MD and Fleet brake pads to give your severe-duty fleet vehicles extreme stopping power.