The TOOPRE Center Lock to 6-Bolt Disc Brake Rotor Adapter allows you to install a standard 6-bolt brake rotor onto a Center Lock hub. Made of lightweight aluminum alloy with CNC precision machining and anodized finish, it provides a secure fit, strong durability, and stylish color options. Suitable for 9/12/15mm hubs. Weight approx. 26 g per set.