The Home Depot has the Milwaukee M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 1/2 in. Impact Wrench with Free Battery for only $249 Shipped! (Reg. $378) The M18 FUEL high torque impact wrench with friction ring eliminates the need to use a pneumatic tool for those stubborn and rusted bolts by delivering 1,000 ft./lbs. of fastening torque and 1400 ft./lbs. of nut-busting torque.