Features:High-quality material: Made of high-quality material, wear-resistant and corrosion-resistant, not easy to deform and break, strong and durable Uses: It is convenient to repair the problem of wheel idling and slipping, and avoid replacing the entire hub or wheel Easy to use: The screw in the head is movable, and the carbon fits inside the spline Easy to disassemble: It can be disassembled with a 11mm hexagonal vibrators Satisfactory service: If you have any questions, please contact us in time We will provide you with better products and services Notice:1 Actual color may be slightly different from the image due to different light effect2 Please allow 1-3cm deviation due to manual measurementDescription:Material: MetallSize: As shownApplicable: 8 or 9 or 10 or 11 speed mountain bike cassette flywheel