Features1Compatibility: Specifically designed for MY1016Z, MY1016, MY1018, and MY1020 motors, the bike freewheel adapter set guarantees a seamless integration and a fit for a wide range of popular electric bikes. 2Iron Construction: Crafted from iron material, our bike freewheel adapter set is built to withstand oil and corrosion, ensuring unparalleled durability and reliability. 3Exquisite Workmanship: With exceptional attention to detail, the flywheel is meticulously crafted to withstand the test of time without any deformation, providing a long lasting performance. 4Easy Installation: Featuring a user friendly design with included adapters, the freewheel is incredibly easy to install, catering to the needs of both professional bike mechanics and passionate DIY enthusiasts. 5 Replacement: The original bike freewheel parts or damaged parts can be replaced directly, with higher strength, convenient for daily maintenance.SpecificationItem Type: Bike Freewheel Adapter SetMaterial: IronWeight: Approx. 499g/17.6ozColor: Black and GoldPackage List2 x Freewheel Adapter2 x Freewheel