Easy to use - Remove the rear wheel from the bike and connect the chain to the tool s clamping device to perform chain work such as tensioning, cleaning, and maintenance. Compact portable design - A compact device that helps you fix and maintain the bike chain for transport, storage, or on the go use. Replaceable gear wheel - The gear wheel can be replaced by removing a component, allowing adaptation to different gear setups. Flexible operation - The design supports flexible connection and gear shifting when needed, making it easier to adjust the drivetrain during service. Key benefits - Simplifies chain tensioning and maintenance - Keeps the chain secure during work or transport - Lets you swap gear wheels to suit different bikes Compatible scenarios - Routine home maintenance: tension, clean, lubricate, and inspect the chain - On the road or at a destination: quick, field-friendly chain tensioning and adjustment - While preparing for transport or storage: secure chain and drivetrain to prevent sagging or damage Notes - Designed to work with bicycle chain systems and gear wheel assemblies as described. Follow manufacturer instructions for best results.