The Makita 5/8″ Hammer Drill delivers versatility and longer run time to the jobsite. The HP1641K offers 2-mode operation (“rotation only” or “hammering wtih rotation”) for multiple applications. The HP1641K is powered by a 6 AMP variable speed motor for the most demanding applications. Capacities include 5/8″ (concrete), 1/2″ (steel), and 1-3/16″ (wood), with a full 0-44,800 BPM. The HP1641K weighs only 4.3 lbs. with a soft grip handle and recessed lock-on button for continuous use.