Sram: Paceline disc brake rotors incorporate the elegant design of our eTap AXS road groupsets and feature a new brake track vent design for smooth, quiet braking performance.FEATURESDesigned for road usePaceline brake track offers quiet brake operation SPECIFICATIONSDiam (Rotor): 140mm, 160mmHub interface: Center LockBolt material (RT): n/aColor (RT): BlackRotor Type: Paceline Centerlock