Makita HM1812 AVT Electric Breaker 1700W 110V HM1812/1 HM1812 AVT Electric Breaker 110 Volt Version, 1,700W The Makita HM1812 AVT Electric Breaker is a 30kg class electric breaker that features best-in-class power. These robust machines are equipped with vibration absorbing housing, providing a practical combination of high power and low vibration. The counterweight mechanism reduces vibration when chipping.