Feature:1. COMPATIBILITY: It is designed for 12 speed flywheels including the for M7100 M6100 M8100 series, ensuring a secure fit that enhances your cycle's performance.2. PREMIUM MATERIAL: Constructed from aluminum alloy, it is designed to endure extensive use while being not easy to get rusty, making it a sturdy addition to your cycling gear.3. ACCURATE ENGINEERING: Utilizes accurate machining techniques to guarantee smooth installation and functionality, allowing you to enjoy a relaxing experience while maintaining your cycle.4. STYLISH DESIGN: The compact and stylish appearance not only fits seamlessly with your cycle but also elevates its overall aesthetic appeal, making it a good enhancement for your ride.5. EASY TO USE: Lightweight and easy to carry, this lock cover allows for simple changes, boosting the security and comfort of your cycling experience on every ride.Specification:Item Type: Flywheel Lock CoverMaterial: Aluminum AlloyApplicable Model: For M7100 M6100 M8100 Series.Package List:1 x Flywheel Lock Cover Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.