Ingersoll Rand 261 Air Impact Wrench, Heavy-Duty, Super-Duty, 261 Series, Air Consumption: 9.5 cfm Average, 38 cfm Load, Air Inlet Size: 3/8 Inch NPTF, Drive Size: 3/4 Inch, Drive Type: Hex, Maximum Torque: 1200 ft.-lb. (Reverse), Torque: 200 - 900 ft.-lb., No Load Speed: 5500 Rpm, Impact Per Minute: 1000, Hose Size: 1/2 Inch, Sound Level dBa: 98.1/109.1, 8.8 Inch Length, Handle Style: Pistol Grip, Weight: 12.4 lb