Using the GearWrench 9056D is a breeze. First, select the appropriate end of the wrench for your fastener - the ratcheting box end for normal use and the open end for hard - to - reach spots. Place the wrench firmly on the fastener and start turning. The 72 - tooth ratcheting mechanism allows for a smooth 5 - degree movement to turn the fastener. When using, make sure to apply force evenly to avoid damaging the fastener or the wrench. As for maintenance, after each use, wipe the wrench clean with a dry cloth. The chrome finish resists corrosion, but it's still a good idea to store it in a dry place. If the wrench gets dirty, you can use a mild soap and water solution to clean it, then dry it thoroughly. Remember, this wrench has a limited lifetime warranty, so if you encounter any problems, contact the manufacturer.