Magura 6-Bolt to Centerlock Adapters Run Any Rotor, Any Hub If you're running a Centerlock hub but want to use a 6-bolt rotor, this is the piece that makes it work. Adapters let you match your disc brake to the mounting standard of your fork or frame, and this one solves the most common mismatch between hub standards. It fits squarely into the system, keeps your rotor properly positioned, and lets you run the rotor you want without compromising brake performance. Features 6-bolt to Centerlock conversion mounts a standard 6-bolt rotor on a Centerlock-interface hub Magura MT system compatible designed to work with the full MT brake line across XC, trail, enduro, and downhill applications Original spare part engineered to Magura's tolerances for correct rotor positioning and reliable braking performance 5-year guarantee coverage qualifies for Magura's leak-proof and system guarantee when used with original Magura components | Magura | 6-Bolt To Centerlock Adapters Internal Spline (For Axles Up To 12Mm)