A demolition hammer is a heavy-duty power tool specifically designed for breaking and demolishing hard materials such as concrete, asphalt, and masonry. Unlike rotary hammers, which combine rotary motion with hammering action for drilling, demolition hammers focus solely on delivering powerful impact blows to chip away and break apart stubborn materials. They are characterized by their high impact energy, measured in joules, which enables them to penetrate and fracture dense surfaces effectively.