SHIMANO Dura-Ace, Ultegra, 105 BR-9000 R55C4 Caliper Brake Pads 

Includes Pad inserts
Rim specific compounds are available
Replacement pads for: 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

R55C4: Dura-Ace 9000: high-end race brake pad with excellent wet and dry performance
R55C4-1: 1mm thinner for extra clearance with wider rim profiles; Designed to fit 24-28mm wide rims
R55C 1mm: 1mm thicker pads are stock rubber but 1mm thicker
High performance is better in wet weather

Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.