3GD Series Sports Discs> 100% British cast and machined high quality product > Wide aperture slots that draw cool air under the pad surface > Slots that expel all dirt dust and debris from the braking area > Blind drilled dimples that eliminate cracking common with through drilled sport rotors whilst helping maintain perfect pad contact > Gold zinc corrosion resistant coating To complement your performance discs why not change to performance brake hoses at the same time - click