CRAFTSMAN V20 20-volt Max Variable Speed 3/8-in Drive Cordless Impact Wrench (Bare Tool) in the Impact Wrenches department at Lowes.com
DEWALT XTREME 12-volt Max Variable Speed Brushless 3/8-in Drive Cordless Impact Wrench (Battery Included) in the Impact Wrenches department at Lowes.com
DEWALT ATOMIC 20V MAX Cordless Brushless 3/8 in.Variable Speed Impact Wrench (Tool Only) DCF923B - The Home Depot
3/8" Dr Air Impact Wrench (Rocking Dog) with ARO Plug (100ft/lb)