Shimano Tiagra BR-4700 Brake Caliper Set Road Bike (Front & Rear Brakset, Retail Package) Consistent All-Around Control 30% Greater Braking Power Modulation With Linear Brake Operation. One Thrust Bearing of Pivot Reduces Caliper Friction New Material Adjustable Toe-In Brake Shoes R50T5 Super SLR Dual Pivot