The D25980K 1-1/8" 80lb demolition hammer delivers a concrete pulverizing 52 joules of impact energy. The dependable and hard hitting German engineered mechanism, delivers long life. With its all metal housing and barrel, this demo hammer was meant for heavy-duty applications like floor trenching for pipe, breaking out stairs/risers, creating openings into shafts, breaking asphalt, loosening/breaking hard packed dirt/gravel/clay and confined space work when big power is needed. The Active Vibra