$63.99 Bosch 18-Volt 1/2-in Drive Cordless Impact Wrench (2-Batteries Included) at Lowes.com
Ryobi 18-Volt ONE+ 1/2 in. Cordless 3-Speed Impact Wrench (Tool-Only) P261 - Walmart.com 
Trades Pro 24 Volt Cordless Impact Wrench, 1/2 Drive, 240 ft-lbs, 837212 689737662998 | eBay
