Suitable for: Shimano Flat-Mount BR-RS505, BR-R805, BR-R9100, BR-R9170, Ultegra BR-R8070, Ultegra BR-R7070, Metrea U5000, BR-RS405F, BR-RS405R, BR-RS305F, BR-R510, BR-R310, and TT-T910. Manufactured from sintered high-performance composite material for optimal performance in extreme and wet conditions. Note: These disc brake pads are only compatible with stainless steel rotors. Comes in a pack of two pieces.