The Makita HM1511/1 corded electric breaker is based on the HM1317C series, but offers drastically increased power with lower vibration, with only a minimum increase in tool size and weight. It has a 30mm Hex Drive and delivers an impact energy of 48.9 Joules and up to 1300 blows per minute. The Makita HM1511/1 demolition hammer (110V) is extremely powerful and robust with 48.9 J of impact energy for performing the heaviest demolition work with ease. It also features Anti-Vibration Technology for ultra-low vibration of just 6.5 m/s².