How to use: Hold the tool's hand - holder firmly. Place the hook at the end of the exhaust spring and pull steadily. This will help you easily remove or install the spring. Note: Don't use excessive force as it may damage the tool or the spring. Make sure the hook is properly attached to the spring before pulling. Maintenance: After each use, clean the tool with a dry cloth. Store it in a dry place to prevent rust and keep it in good working condition.