1/2 in. Right Angle Composite Air Impact Wrench, Jumbo Hammer, 400 ft. lbs.
Which Impact Wrench Do I Need? - Shop Tool Reviews
Milwaukee M12 FUEL 12V Li-Ion Cordless 3/8 in. Impact Wrench w/3/8 in. High Speed Ratchet and 3/8 in. Extended Reach Ratchet 2554-20-2567-20-2560-20 - The Home Depot