Ingersoll Rand 244A 1/2-Inch Super Duty Air Impact Wrench Drive (in.): 1/2, Average Air Consumption (CFM): 5.4, CFM at Load: 21, Speed - No Load (RPM): 7,000, Blows Per Minute (BMP): 1,300, Max. Torque (ft.-lbs.): 500, Working Torque (ft.-lb.): 40 - 350, Inlet Size (in.): 1/4, Min. Hose Size (in.): 3/8, Hammer Mechanism: Twin, Standard Bolt Capacity (in.): 5/16, Variable Speed: Yes Technical Details - Powerful, with smooth, balanced blows - Pressure Feed Lubrication System automatically greases the impact mechanism - Working torque: 40-350ft/lbs - Pressure feed lubrication http://www.bestbuyking.co.cc/Buy-Ingersoll_Rand_244A_1_2_Inch_Super_Duty_Air_Impact_Wrench-B00004XOSP.html
