The Hitachi H65SD2 1-1/8-Inch Hex 40-Pound Demolition Hammer dominates the competition in pure power, while minimizing noise and vibration. The 10.8-amp motor produces a best-in-class impact energy of 31-feet per pound, which is over 50-percent higher than the leading competitor’s model. A unique main handle design produces low, full-load vibrations, resulting in less user fatigue. The armature bearing is seated in metal which reduces the effects of vibration and heat on motor performance, thus prolonging the life of the tool. Other features include auto-stop brushes, lock-on trigger, sealed grease lubrication, 360-degree auxiliary handle and a universal tool retainer. The universal tool retainer gives you the option of using collared steel or slotted steel without a collar. The elastomer, anti-vibration handle offers a sure grip and reduces user fatigue. The 360-degree cushion grip, auxiliary handle is located between the body of the tool and the bit cylinder to improve comfort. Auto-stop carbon brushes for added motor durability.