This Craftsman Offset Double Box End Wrench features a 12-point drive type and is designed for SAE measurements. It is a single item and is made in the United States with the size of 9/16in. The wrench is of high quality and is suitable for automotive tools and supplies. Its brand name, Craftsman, is well known for producing reliable hand tools. This wrench is a must-have for any mechanic or DIY enthusiast looking for a durable and efficient tool.