1. Strong and made of strength and rustproof materials, these bicycle hub disc brake adapters are built to last. They are deformation resistant and provide longlasting performance, ensuring a reliable riding experience. 2. Smooth: The CNC machining process ensures a smooth surface, minimizing abrasion damage and enhancing overall durability. These adapters offer compatibility and a precise fit with your bike's components. 3. Easy Installation: Designed for convenience, these adapters are userfriendly. Follow the installation requirements, which include an axle distance of 44 mm between the sixbolt disc and the hole. You can set them up quickly and effortlessly on your centerlock hub. 4. Compatibility: for MTB cycling, these adapters are compatible with centerlock hubs. They allow you to install sixbolt discs, delivering braking performance and improving your riding experience.