Shimano R55C4 Inserts for Carbon Rim Shimano 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- R55C4: High-end race brake pad with excellent wet and dry performance Intended Brake Type: Caliper Pad Attachment Style: Bolt-In (Caliper) Pad Type: Replacement Insert - Cartridge