DURATECH Cordless Impact Wrench, 20V Impact Gun, 1/2'' Drive, 330 Ft/lbs Max Torque, with 4 Impact Sockets, 4.0Ah Large Capacity Battery and Fast Charger Included, Great Gifts - Amazon.com
Cordless Impact Wrench Brushless 1/2 Inch Power Impact Gun High Torque 310 Ft-lbs(420 Nm), 21V Battery Electric Impact Drill Driver with 6000mAh Battery, 4 Sockets, 12 Drill Accessories for Car Home - Amazon.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 - Walmart.com
Neiko 10878A 1/2-Inch-Drive High-Torque Cordless Electric Impact-Wrenc – NEIKO®