DEWALT 1/2-in 20-volt Max-Amp Variable Speed Brushless Hybrid Cordless and Corded Hammer Drill (2-Batteries Included) in the Hammer Drills department at Lowes.com
Milwaukee 5371-21 1/2-Inch Magnum Dual Torque Hammer-Drill, 0-1000/0-2500 RPM Kit with Heavy-Duty Plastic Case - Power Hammer Drills - Amazon.com