SHIMANO SM-RTAD05 MTB Bike Centre Lock Disc Rotor 6-Bolt Brake Rotors Kit
A Shimano Centre lock adapter for mounting a 6-bolt Rotor onto a centre lock hub. Does not fit 2-piece rotors with aluminum spiders like Shimano RT86 or RT76 6-bolt rotors. Lock ring uses Shimano Hollowtech II standard cup installation tool.