Shimano RT-CL700 Disc Brake Rotor - Centerlock Lockring IncludedThe Shimano RT CL700 centerlock disc brake rotor inherits the superior performance of the higher end models with its ICE Technology and updated 3D aluminum carrier for quiet and consistent braking. Proven ICE Technology ensures superior heat dissipation and consistent braking Optimized 3D shaped aluminum carrier is designed purposefully in every single dimension and achieves lightweight and superb heat distortion resistance Carrier shape prevents the