This is the shimano dura ace br 9000 r55c4 cartidge brake shoe and fixing bolt set this set includes shoes for one brake with two included fixing bolts these pads are for carbon rims and are not to be used on allow rims features r55c4 high end race brake pad with excellent wet and dry performanceshimano cartridge type road brake pads fit models dura ace br 9000 br 9010 br 7900 br 7800 br7700 ultegra br 6800 br 6700 br 6600 br 6500 105 br 5800 br 5700 br 5500 non series br r600 b