With an air impact wrench from Grainger, you can tighten and loosen a screw or bolt in seconds flat. This powerful pneumatic tool uses compressed air, a variety of sockets and rotary motion to quickly and easily apply more torque than you can get with a manual wrench. Shop here for light-, general- and industrial-duty pneumatic impact wrenches. Get the air impact wrench that can help you get the job done at Grainger.