Feature:1. Application: Fit for MY1016Z MY1016 MY1018 MY1020 motors: Designed specifically for use with these popular electric bike, ensuring a perfect fit.2. Iron Material: Made from premium iron materials, the bicycle freewheel is oil resistant and boasts a long lifespan, providing reliable and durable performance.3. Superior Craftsmanship: With its fine craftsmanship, the freewheel is durable and will not deform over time, maintaining its functionality and performance.4. Great Replacement: Professional manufacturing, this is your ideal option and replacement for your rebuild, repair, and maintenance needs.5. Easy Installation: The freewheel with adapter is easy to install, making it convenient for both professional bike mechanics and DIY enthusiasts.Specification:Item Type: FreewheelMaterial: Iron Application: Fit for MY1016Z MY1016 MY1018 MY1020 motors.Package List:1 xFreewheel Adapter1 x Freewheel