Maybe try something like this
or this
Milwaukee M12 FUEL 2565-20 12V Brushless 1/2" Cordless Impact Wrench (Tool Only) for sale online | eBay
Find many great new & used options and get the best deals for Milwaukee M12 FUEL 2565-20 12V Brushless 1/2" Cordless Impact Wrench (Tool Only) at the best online prices at eBay! Free shipping for many products!
www.ebay.com
or this
Astro Pneumatic 1838 ONYX 3/8" Dr. Nano Angle Impact Wrench | eBay
ONYX 3/8" Nano Angle Impact Wrench. Part #1838. ASTRO PNEUMATIC Handle Type: Straight right angle. Air Exhaust: 360° Swivel Air Muffler. Hose Size: 3/8". Average Air Consumption: 4.2 CFM. Noise Level(sound pressure): 85 dB.
www.ebay.com