Power Stop brake pads are engineered for noise-free braking with dual rubber backed shims that offer six times more noise reduction than plain steel shims. Evolution pads feature a true ceramic formula that keeps wheels cleaner, and won't wear-out the rotors. Power Stop pads have 20 percent more stopping power than other leading brands. <p><br /><b>Power Stop Z16 Ceramic Brake Pad:</b></p> <ul> <li>Thermal scorched for fast break-in</li> <li>Positive mold technology</li> <li>Low dust ceramic formulation</li> <li>Shims made with dual rubber layers over constrained steel to eliminate noise</li> </ul>