Disco Shimano Dura-Ace Road Pads, Ultralight Strong, Al CNC Cartridge / Holder Brand: DiscoBrakes Color: Black Compatible with Shimano Road Brake Systems including Dura Ace, Ultegra, 105 SCM including BR-7800, BR-7700, BR-6500, BR-6600, BR-5500 and BR-R600 (R55C2) Superlight, cartridge hollowed out by CNC machining Ventilation slots in holder for heat dissipation