Powerful rocking dog clutch 230ft/lbs. of torque. Push button direction change for quick and easy operation. Built-in air regulator for precise speed control. Lightweight and durable cast aluminum housing. Comfortable soft touch finish for improved comfort and control. Ideal for changing tires, shock/spring work, and other automotive jobs. Our most economical 1/2" drive impact wrench. Specifications: Drive Size: 1/2", Average CFM: 4.5, Free Speed RPM: 7500, Air Inlet: 1/4" NPT, Max Torque: 230ft/lbs., Working Torque: 50-20ft/lbs., Standard bolt size: 9/16", Weight: 4.4lbs.