Makita HM1812 70 Lb. Advanced Avt® Breaker Hammer, Accepts 11/8" Hex BitsMakita HM1812 The new 70 lb. AVT Breaker Hammer (model HM1812) is engineered to hit like an air hammer, but with less noise and vibration. It has a powerful 15 AMP motor that delivers a full 53. 9 ft. lbs. (73. 8 Joules) of impact energy, so contractors get hard hitting performance. Users also benefit from less noise and lower vibration than an air hammer, and zero hassle with an air hose and compressor. The HM1812 features the latest Advanced AVT