Seesii Brushless Power Impact Wrench, Cordless, 1/2 inch Max High Torque 479 Ft-lbs(650Nm), 3300RPM w/ 2x 4.0 Battery, 6 Sockets,9 Drill,6 Screws for Car Home, WH700 - Amazon.com
Milwaukee M18 18V Lithium-Ion Cordless 1/2 in. Impact Wrench W/ Friction Ring W/ (1) 5.0Ah Battery and Charger 2663-20-48-59-1850 - The Home Depot
Aiment Cordless Impact Wrench 1/2 inch, 550 Ft-lbs Max Torque(700NM), 21V 3000RPM Brushless Power Impact Gun, 4.0Ah Li-ion Battery with Fast Charger, 6Pcs Sockets, Electric Impact Driver for Car Home - Amazon.com