20V 370 Ft-lbs Brushless Impact Wrench Kit, 1/2 Inch Cordless Electric Impact Gun, High Torque 3,400 IPM Impact Driver with 6 Pcs Drive Impact Sockets, 2.0Ah Battery, Fast Charger, and Tools Bag - - Amazon.com
MAKITA 18 V DTW285SFE Cordless 1/2" Sq Drive Impact Wrench