5378-20 5378-21 1/2 in. Pistol Grip Dual Torque Hammer Drill, 0 RPM to 1350 RPM/0 RPM to 2500 RPM (0) Write a review the power to drill holes in concrete. The versatility to excel at wood and steel applications. This powerful 7.5 Amp, Hammer Drill features dual trigger speed control in 2-ranges, with more power for the toughest applications or more speed and less torque for lighter applications. Use it for drilling in wood with flat boring bits, whole saws, auger bits and self-feed bits or in steel with twist bits and in concrete with percussion bits. The removable side handle helps set the depth rod for pre-set whole drilling. The heavy-duty metal gear case withstands daily jobsite use, yet the drills lightweight, balanced pistol-grip design reduces fatigue during a long work day.