DEWALT 20V MAX XR Brushless High Torque 1/2" Impact Wrench with Detent Anvil, Cordless, Tool Only (DCF899B) - - Amazon.com
DeWALT Max 3/8" 20V Cordless Impact Wrench DCF883B with (2) 5Ah Batteries, Charger, & Tool Bag - Walmart.com
DeWalt DCF899 20V MAX XR Brushless High Torque Impact Wrench, Battery & charger 744110049657 | eBay
Synergy Digital Power Tool Battery, Compatible with DeWalt DCF899 Power Tool, (Li-ion, 20V, 4500mAh) Ultra High Capacity, Replacement for DeWalt DCB102 Battery - Walmart.com