Pair of genuine Shimano replacement disc brake pads for 4 piston brakes Steel back plate with metal braking pad compound Main component series XT, SLX, Deore, Saint and Zee Will fit a wide range of Shimano disc brakes; BR-M8120, BR-M7120, BR-M6120, BR-M8020, BR-M820, BR-M810, BR-M640, BR-MT520, BR-MT420, BR-U8020