20V 12.3lbs
DEWALT 20V MAX Impact Wrench Kit, High Torque, Detent Pin Anvil, 1/2-Inch (DCF889M2)
The Home Depot
20V MAX Cordless 1/2 in. High Torque Impact Wrench with Detent Pin and (2) 20V 4.0Ah Batteries
Amazon
DEWALT 20V MAX Impact Wrench Kit, High Torque, Detent Pin Anvil, 1/2-Inch (DCF889M2)