Using the DeWalt DWMT17002 12 - piece hex socket set is a breeze. First, pick the right socket size for your fastener. Then, attach it to your 3/8 - inch drive tool. You can use it to both tighten and loosen fasteners. Just turn the tool in the right direction. When using, make sure the socket fits snugly on the fastener to avoid slippage and damage. As for maintenance, after each use, wipe the sockets clean with a dry cloth. To prevent rust, store them in a dry place. If you notice any signs of wear, it might be time to replace the socket. This set is a great addition to your toolbox for all your fastening needs.