The Mac Tools MPF990501 High Performance 1/2" Drive Air Pneumatic Impact Wrench is a premium single item air tool designed for automotive use. Made in the United States by Mac Tools, known for their high-quality tools, this impact wrench delivers reliable and powerful performance. With a specific manufacturer part number of MPF99501, this tool is perfect for professional mechanics and car enthusiasts looking for a durable and efficient tool for their garage or workshop.