CRAFTSMAN V20 20-volt Max Variable Speed 1/2-in Drive Cordless Impact Wrench (Battery Included) at Lowes.com
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
Neiko 10878A 1/2-Inch-Drive High-Torque Cordless Electric Impact-Wrench Kit with 20-Volt Lithium-Ion Charging Battery and 4 1/2-Inch-Drive Sockets - - Amazon.com
Milwaukee M18 FUEL 18V Lithium-Ion Brushless Cordless 1/2 in. Impact Wrench with Friction Ring (Tool-Only) 2767-20 - The Home Depot
Elikliv Cordless Impact Wrench, 1/2 inch Impact Gun Max Torque 420Ft-lb(600Nm) 21V 4.0Ah Power Impact Driver Battery, Fast Charger,16 Drive Impact Sockets and 12 Driver/Drill Bits - for Home & Garage - -
Chicago Pneumatic CP7741-2 Impact Wrench 1/2″ Drive with 2″ Extended A - Tire Supply Network