DEWALT 20V MAX Cordless Brushless 1/2 in. High Torque Impact Wrench Detent Pin, (1) 20V Lithium-Ion 5.0Ah Battery, and Charger DCB205CK899 - The Home Depot
DEWALT 20V MAX* XR Cordless Impact Wrench with Hog Ring Anvil, 1/2-Inch, Tool Only (DCF894HB) - - Amazon.com
DEWALT 20V MAX XR Tool Connect Impact Driver Kit DCF888P2BT from DEWALT - Acme Tools
DeWALT Cordless 20V MAX Lithium-Ion Drill Driver/Impact Driver Combo Tool Kit, 1.3 Ah at Tractor Supply Co.