This is the Shimano Dura-Ace BR-9000 R55C4 Cartridge Brake Shoe and Fixing Bolt Set. This set includes shoes for one brake, with two included fixing bolts. These pads are for carbon rims and are not to be used on allow rims.

Features: 

• R55C4: High-end race brake pad with excellent wet and dry performance
• 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-R600, BR-R561, BR-R560, BR-CX70