Using the GearWrench 9308D wrench set is easy. First, pick the right size wrench for your fastener. The sizes are clearly stamped on both ends of the beam, so you can quickly find the one you need. To move a fastener, just place the ratcheting box end over it. Thanks to the 72 - tooth design, you only need to turn it 5° to make the fastener move, which is a lot less than with standard wrenches. The off - corner loading design gives you a better grip and stops the fastener from rounding. When working in tight spots, the thin head and stubby length of the wrenches will let you reach the fastener easily. As for maintenance, since the wrenches have a full - polish chrome finish, you can just wipe them clean with a cloth. This finish also resists corrosion, but it's still a good idea to keep them dry when not in use. Store the wrenches in the included tray to keep them organized and prevent any damage. And remember, this set comes with a limited lifetime warranty, so you can use it with confidence.