Using your GearWrench 15 - Piece Impact Metric Socket Set is easy. First, select the right socket size for your fastener. Make sure the socket is properly seated on the drive tool. When using in tight spaces, take advantage of the flex socket design to reach the fastener. For the best results, always apply steady pressure and avoid over - tightening. When it comes to maintenance, keep the sockets clean after each use. You can use a simple degreaser to remove any dirt or grime. Dry them thoroughly to prevent rust. Store the sockets in the provided blow - mold case. This will not only keep them organized but also protect them from damage. Remember, these sockets are made for professional use, so handle them with care to ensure they last a long time.