The New Bosch DH507 12 lb. SDS-MAX Demo Hammer features a powerful 10 Amp motor along with a Variable Speed Dial for controlled chiseling applications. Best in Class Power to Weight Ratio at 5.6 ft. lbs. impact energy and only 12.4 lbs. in weight improved impact energy for maximum productivity in a variety of chiseling applications. Hammer Tube Grip Area Additional grip area besides the side handle for “maximum comfort” when chiseling in tight spaces or in a wide variety of positions.