- Essential Maintenance Tool: This innovative device replaces the rear wheel of your bike, enabling easy cleaning, transport, and maintenance. It secures the chain in place, making it ideal for cleaning or diagnosing issues with your derailleur. - High Compatibility: Designed to work seamlessly with all front derailleurs and 8mm chains. It fits bicycle frames featuring quick-release systems and 12mm thru-axles, ensuring versatility across various bike models. - User-Friendly Design: Effortlessly shift your bike without the rear wheel and adjust the derailleur as needed. This tool enhances your bike maintenance experience by providing flexibility during repairs. - Simple Operation: To use, simply remove the rear wheel, then clamp the chain guide or blind hub to the dropout. This keeps the chain neatly out of the way during transport or maintenance tasks. Use Scenarios: 1. Chain Cleaning: Easily secure the chain for thorough cleaning and lubrication without the hassle of removing additional components. 2. Derailleur Troubleshooting: Quickly diagnose and adjust derailleur issues by stabilizing the chain in a fixed position. 3. Safe Transport: When transporting your bike, this tool prevents the chain from tangling, ensuring a hassle-free experience. This maintenance tool is a must-have for any cyclist looking to simplify bike upkeep and enhance performance.