Using the Milwaukee 45 - 34 - 9123 socket is easy. First, find the right size by looking at the stamped numbers on the flat sides. Then, attach it to your wrench. When working, the four flat sides will keep the socket from rolling around on your workbench. To make sure it lasts, avoid using too much force that could damage the socket or the bolt. After use, clean the socket with a dry cloth to remove any dirt or debris. Store it in a dry place to prevent rust. Remember, this socket comes with a lifetime guarantee, so if you have any issues, you're covered.