Using this GearWrench socket set is easy. First, select the right socket size for your fastener. Simply fit the socket onto your 1/2 - inch drive tool. Make sure the socket is firmly attached before starting your work. When using, apply steady pressure and avoid using excessive force that could damage the socket or the fastener. Remember, these sockets are designed with an off - corner loading feature to reduce fastener rounding, so take advantage of this design for better results. As for maintenance, after each use, clean the sockets with a dry cloth to remove dirt and debris. You can use a mild solvent if there's stubborn grime, but make sure to dry them thoroughly. Store the sockets in the provided blow mold case to keep them organized and protected from damage. Also, since they have a coating to resist corrosion, try to keep them away from wet or humid environments as much as possible.