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 effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: Metall Size: As shown Applicable: 8/9/10/11 speed mountain bike cassette flywheel Package List: 1 x Bike Freewheel Hub Body