MILWAUKEE - M18 FMTIWF12-0X - 1/2" Impact wrench, 610 Nm, 18 V, FUEL™, in case, without equipment
DEWALT - The Home Depot
WORKPRO 20V Cordless Impact Wrench, 1/2-inch, 320 Ft Pounds Max Torque, 2.0 Ah Li-ion Battery with Fast Charger, Belt Clip for Easy Carrying - - Amazon.com