Features1Application: Fit for MY1016Z MY1016 MY1018 MY1020 motors: Designed specifically for use with these popular electric bike, ensuring a fit. 2Iron Material: Made from iron materials, the bicycle freewheel is oil resistant and boasts a long lifespan, providing reliable and durable performance. 3Superior Craftsmanship: With its fine craftsmanship, the freewheel is durable and will not deform over time, maintaining its functionality and performance. 4Great Replacement: Professional manufacturing, this is your ideal option and replacement for your rebuild, repair, and maintenance needs. 5Easy Installation: The freewheel with adapter is easy to install, making it convenient for both professional bike mechanics and DIY enthusiasts.SpecificationItem Type:FreewheelMaterial: IronApplication:FitforMY1016ZMY1016MY1018MY1020motorsPackage List1 xFreewheelAdapter1 xFreewheel