The Flash Pro full brake pad set consists of the brake pad and pad holder and is for use with Dura Ace, Ultegra, 105, SRAM and TRP braking systems. For use on carbon rims only.Black Prince: Latest carbon rim compound, provides superior power, control and modulation. Braking distances are significantly reduced in all conditions.Yellow King: Awesome power (wet & dry) and precise modulation on carbon rims. No squeaking and very little wear to the rim. Supplied as a pair of pads for one complete brake