Compatible with Dura Ace Road Brake Systems. Will work with any Dura Ace Brake shoe that has removable shoes that use set screws Compatible with Dura Ace 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 Higher Power Excellent wet weather control Performs well in both dry and wet conditions Low noise Length: 55mmAlso compatible with cartridge brake shoes OBE-R31CP, OBE-R32TP, OBE-R33TR, OBE-R34CR, OBE-R21TR and OBE-R11AR Product Code: OBE-R43P