$59.99 PORTER-CABLE 20-Volt Max 1/2-in Drive Cordless Impact Wrench (1-Battery Included) at Lowes.com
MILWAUKEE 1/2 Cordless Impact Wrench Kit, 18.0 Voltage, 220 ft.-lb. Max. Torque, Battery 
HART 20-Volt Cordless 1/2-inch Impact Wrench (Battery Not Included) Fast Ship US 810022394038 | eBay
