Using the GEARWRENCH 81919 wrench set is a breeze. First, pick the right wrench size for your fastener. You can easily find the size as it's stamped on the open - end head and the beam. Then, place the wrench on the fastener. The off - corner loading design on both ends will give you a strong grip, and you can apply up to 25% more torque. The 15° offset box end is great for reaching fasteners in tight spaces. Just turn the wrench in the direction you need to either tighten or loosen the fastener. When it comes to maintenance, the shiny chrome finish is easy to clean. Just wipe it down with a clean cloth after use. To keep it in top shape, store it in a dry place to prevent corrosion. Also, don't use these wrenches on fasteners that are too large or too small for the size of the wrench, as this can damage both the wrench and the fastener. Remember, this set comes with a limited lifetime warranty, so if you have any issues, you're covered.