Using this GearWrench socket set is straightforward. First, select the right socket size for your fastener. Make sure to match the 1/2 - inch drive tang size of the sockets with your impact tool. Insert the socket onto the drive of your tool, and then place it over the fastener. Start your impact tool, and it'll do the work for you. When using the sockets, avoid using excessive force that could damage the fastener or the socket. Also, don't use the sockets in applications where they're not designed, like extremely high - torque situations not within ASME specifications. For maintenance, after each use, wipe the sockets clean with a dry cloth to remove any dirt or debris. If they get wet, dry them thoroughly to prevent rust. Periodically, check the laser - etched markings for visibility. If they start to fade, you can still rely on the secondary hard stamping for size identification. Store the sockets in the provided blow - mold case to keep them organized and protected.