This impact wrench is a perfect companion when you take on your building project. You don't need to bother with a cord, since it runs on a rechargeable battery.
From Amazon
DEWALT DCF899HN-XJ 18 V XR Brushless 1/2 Inch High Torque Impact Wrench (950 Nm), Bare Unit (Hog Ring Version), Yellow/Black, 4.09 cm*10.87 cm*9.53 cm
Powertool World
DeWalt DCF899HN 18v XR 1/2" High Torque Impact Wrench With Hog Ring Body Only