$56.99 DEWALT 20-Volt MAX Lithium-Ion Cordless 1/2 in. Impact Wrench Kit with 2 Batteries 4 Ah Charger 
DEWALT 18-Volt XRP NiCd Cordless 1/2 in. (13 mm) Impact Wrench Kit with Battery Pack 2.4Ah, 1 
Shop DEWALT 7.5-Amp 1/2-in Corded Impact Wrench at Lowes.com
