This is a rare vintage Craftsman socket that is made in the United States. It is a 9/16 inch socket with a 3/8 inch drive and 12 points. The socket has a chrome surface finish and is a single item. The set comes with a lifetime warranty and is perfect for automotive use. The socket is a standard size and is suitable for different types of measurements. It is a high-quality tool that will serve you for a long time.