BAUER 20V Cordless 3/8 in. Compact Impact Wrench - Tool Only | eBay
Hercules 20V Brushless Cordless 3/8 in. Compact 3-Speed Impact Wrench – Tool Only - Delivers up to 525 ft. lbs. breakaway torque and 229 ft. lbs. of fastening torque - Amazon.com
DeWALT DCF913B 20V 3/8" Compact Impact Wrench - Bare Tool
Milwaukee 2754-20 M18 FUEL™ 3/8" Compact Impact Wrench w/ Friction Ring (Bare Tool) | Crawford Electric Supply