Makita HM1214CX 27 lb. SDS‘MAX AVT® Demolition Hammer, and 1" Rotary HammerMakita HM1214CX Tough on concrete, not on you. Makitas hard hitting HM1214C 27 lb. Breaker Hammer is equipped with Anti Vibration Technology (AVT), an exclusive counterbalance system that reduces vibration. The result is more efficient hitting on the concrete and less vibration in the tool and the tool user. The HM1214C with AVT is engineered to be the most efficient breaker hammer In its class with a 14 AMP motor that provides 950 1,900 BPM and 25. 7