DEWALT 20V MAX XR Brushless High Torque 1/2" Impact Wrench with Detent Anvil, Cordless, Tool Only (DCF899B) - - Amazon.com
China Over 1000nm Cordless Brushless Motor Impact Wrench Beat Milwaukee Light Weight 1/2" or 3/4" - China Brushless Motor Wrench, High Torque 1000nm Wrench