This is a high-quality Mac Tools Open-End Wrench in a size of 3/8in. x 7/16in. It is a single item and made in the United States, specifically in Sabina Ohio. The wrench is perfect for automotive repairs and maintenance, and it belongs to the SAE system of measurement. The manufacturer part number is DR1214. This wrench is ideal for those who need a reliable and sturdy tool for their automotive projects. The brand Mac Tools is well known for its quality and durability, making it an excellent choice for mechanics and handymen alike. The wrench is a single item, so there are no sets included. It is perfect for those who need a specific size and want to purchase only what they need.