The Mac Tools 1/2" Air Wrench AW5500M is a high-quality, durable tool designed for automotive applications. It features a 1/2" chuck size with a keyed chuck key type for secure bit retention. The pistol grip design makes it easy to handle and control, while the reversible feature allows for versatile use. With a maximum speed of 9800 RPM, this air wrench is a powerful tool for loosening and tightening nuts and bolts with ease. Plus, the side handle provides extra stability and control during use. Item has not been tested!!