Promax Decode R Flat Mount Mechanicl Disc Brake Caliper Set For Gravel / Road BikesPromax Decode R Flat Mount Mechanical Disc Brake Caliper Set The Decode's dual piston design makes it easy to setup and ensures a precise balance of modulation and power ideal for gravel road or CX. Fitted with removable brake adapters these calipers can take either a 140 or 160mm rotor (included) and offer excellent stopping power for road, gravel and cyclocross bikes without the hassle of hydraulic fluid. Disc brake power for road, gravel or