Shimano Dura-Ace Road Brake Pads for Carbon Rims,DiscoB Ultegra 105 BR-7800 7700 Brand: DiscoBrakes One Pair of Disc Brake Pads (2 pads)Will work with any Shimano Brake shoe that has removable shoes that use set screws and 55mm long Also compatible with cartridge brake shoes OBE-R31CP, OBE-R32TP, OBE-R33TR, OBE-R34CR, OBE-R21TR and OBE-R11AR 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) Superior braking performance