1、Compatibility: Specifically designed for MY1016Z, MY1016, MY1018, and MY1020 motors, the bike freewheel adapter set guarantees a seamless integration and a perfect fit for a wide range of popular electric bikes. 2、Iron Construction: Crafted from premium iron material, our bike freewheel adapter set is built to withstand oil and corrosion, ensuring unparalleled durability and reliability. 3、Exquisite 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. 4、Easy 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、Perfect Replacement: The original bike freewheel parts or damaged parts can be replaced directly, with higher strength, convenient for daily maintenance.