Feature:1. Durability and Stability: 18T single speed freewheel is made of steel, high performance and heat resistance, anticorrosion, long service life.2. Low Noise: 18T single speed bike freewheel features stable rotation and low noise operation, ensuring a smooth and enjoyable cycling experience.3. High Accuracy Internal Thread: Threaded single speed bike freewheel ensures a tight connection with the hub and provides smooth operation.4. Easy to Install: The 18T single speed bicycle flywheel is lightweight and compact, and can be easily removed or installed on the bicycle.5. Compatibility: This kit is suitable for a wide range of single speed bike. Upgrade your bike and enjoy a more efficient and enjoyable riding experience.Specification:Item Type: 18T Single Speed FreewheelMaterial: SteelWeight: Approx. 371g / 13.1oz.Package List:1 x 18T Single Speed Freewheel 1 x Connector