Get plenty of control, not to mention power, with the Porter-Cable PT501 1/2-Inch Pneumatic Impact Wrench. This variable-speed impact wrench allows for precise control during use, and its durable pin clutch mechanism ensures years of trouble-free operation. The PT501 displays exceptional power and speed reaching 7,000 RPM, 1,000 BPM, and an incredible 400 ft./lbs. of torque. This compact, 1/2-inch impact wrench manages 4.2 SCFM at 90 PSI, so it's compatible with most air compressors.