Using the Joker 6003 Combination Bike Wrench is a breeze. First, identify the screw you need to work on. Thanks to the color - coded size indicator, it's easy to pick the right wrench. Place the wrench on the screw, and the special mouth geometry will help you find the right fit. When you turn the wrench, it will automatically adjust to the optimal position. In tight spaces, the 15° angled slim ring side allows you to reach screws that are hard to access. Just keep turning the wrench, and it will grip the screw every 15°. As for maintenance, after each use, wipe the wrench clean with a dry cloth. Avoid exposing it to extreme moisture or harsh chemicals to keep the corrosion - resistant surface in good condition. And always store it in a dry place to ensure its long - term performance.