Shimano L05A - RF disc brake pads feature a resin pad compound and aluminum finned backplate for better heat dissipation. Up to 40% more durability than the previous L03A pads. - Direct replacement for L02A and L03A pads - Compatibility: 105, Ultegra, and DuraAce disc brakes, as well as others matching the following model numbers: BR-R7070 (105), BR-RS405, BR-R9170 (Dura-Ace), BR-R8070 (Ultegra), BR-RS805, BR-RS505, BR-RS305, and BR-U5000.