Powerstop brake pads are engineered for noise free braking with dual rubber backed shims that offer 6 times more noise reduction than plain steel shims. The pad surfaces are thermal scorched for fast break-in. Evolution pads feature a true ceramic formula that keeps wheels cleaner, and won't wear-out the rotors. Power Stop pads have 20% more stopping power than other leading brands. The premium carbon-ceramic compound is made using OE positive mold technology, that assures a uniform friction density throughout the pad and this helps control noise and premature wear. Evolution pads are manufactured under TS16949 standards to OEM specifications including chamfers and slots. This product ships in approximately 1 days