1. Light and durable The 9Speed12 36Twheel features a hollow design that significantly reduces weight while maintaining strength, which helps to reduce the bicycle load. Made from highquality aluminum alloy, it is rustresistant and built to ensure longterm durability for your bicycle. 2. Smooth Experience seamless and noise cycling with this 9speed cassettewheel. The precisionguided design ensures smooth rotation and delivers a superior riding experience, whether you're on an electric bicycle or a moped. 3. This bicycle wheel is designed for hassle installation. Simply replace your old or damaged wheel with this highstrength model to enhance your bicycle's performance. No special tools or expertise required, making it a convenient upgrade for any cyclist. 4. Precision internal threads The internal threads of this 9speed cassette are highly precise, ensuring a secure and tight connection with your bicycle hub. This precision fit enhances stability and performance, giving you confidence on every ride.