The HAMMERHEAD1/2 Inch Hammer Drill is equipped with a powerful 7.5-Amp motor and variable speed trigger with trigger lock-on for prolonged operation. The two-mode selector switch easily changes the action from rotation-only to hammer-drill function. This Hammer Drill reaches 0-3,000 RPM and hammers out 0-48,000 IPM. To relieve arm strain and muscle fatigue, the adjustable side handle can be moved to get better leverage for specific jobs.