DEWALT XTREME 12-volt Max Variable Speed Brushless 3/8-in Drive Cordless Impact Wrench (Battery Included) in the Impact Wrenches department at Lowes.com
3/8 in Drive Impact Wrench by DEWALT at Fleet Farm
DEWALT 20V MAX XR 3/8" Impact Wrench (Hog Ring) (4.0Ah) w/ 2 Batteries and Bag - Walmart.com