Bomgaars : DEWALT 20V MAX XR 1/2 IN High Torque Impact Wrench with Hog Ring Anvil : Impact Wrenches
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
DEWALT 20V MAX Impact Wrench, Cordless 2-Tool Combo Kit, 1/2-Inch Mid-Range and 3/8-inch Compact with 5ah Battery and Charger (DCK205P1) - - Amazon.com
DEWALT 20V MAX XR Cordless Brushless 3/8 in. Compact Impact Wrench (Tool Only) DCF890B - The Home Depot