The top spec D25901K 22 lb. SDS Max Demolition Hammer with SHOCKS® provides high performance without overheating. The hard hitting and reliable German engineered mechanism, delivers 19 joules of impact energy and a non-air pumping beat piece to extend tool and seal life by eliminating dust from entering the unit. DEWALT's SHOCKS-Active Vibration Control® system reduces vibration at the handles, compared to hammers without such systems. A large rocker switch makes it easy to power on and switch off.