The D25851K 13 lb. Spline Demolition Hammer is a high-performance chipping hammer powered by 13.5 amp motor. The dependable and hard hitting German engineered mechanism, delivers 8 joules of impact energy. With Constant Speed Under Load electronics, the D25851K is ideally suited for work on concrete and masonry walls, floor and wall channeling, and removing plaster and tile from floors, walls and ceilings. Variable speed dial allows you to reduce power for better performance in brittle substrate materials. The Active Vibration Control® technology employed delivers reduced user vibration for less user fatigue and greater productivity.