ATD ATD-10521 1/2" Electric Impact Wrench Maximum Torque: 240 feet.-pounds, motor: 7 ampere, 60 hertz, 120 volt AC and net tool weight: 7.25 pounds No load speed: 2,100 RPM and blows per minute: 2,700 BPM Drive: 1/2 inch square, length: 9-1/4 inch (234mm)