Chicago Pneumatic CP7750-2 1/2-Inch Drive CP Turbo Air Impact Wrench with 2-Inch Extended Anvil Still the most powerful 1/2-inch impact wrench on the planet with 800 ft.lbs of honest torque Now with 31% less air consumption at an average of 5.5 cubic feet per minute Turbo 2.0 accelerates faster with the most torque of any 1/2-inch impact 4 position power regulator with 2 settings in forward and 2 in reverse Working torque range: 50-650 ft./lbs.