Impact Wrench, 20 9lbs
DeWalt 20V MAX 1/2 in. Cordless Brushless Mid-Range Impact Wrench Kit (Battery & Charger)
The Home Depot
20V MAX Lithium-Ion Cordless 1/2 in. Impact Wrench Kit with (2) 5.0Ah Batteries and Charger
Amazon
DEWALT 20V MAX Impact Wrench, Cordless, 1/2 inch, 2 Batteries and Charger Included (DCF891P2)