Makita 12 lb. AVT Demolition Hammer SDS-MAXMakita HM0871C 12 lbs. AVT Demolition Hammer, SDS MAX The Makita 12 lb. Demolition Hammer delivers 8. 6 ft. lb. of impact energy with a powerful 10 AMP motor. It weighs only 12. 3 lbs., creating a compact solution for overhead applications. The demolition hammer features Anti Vibration Technology (AVT) and vibration absorbing rear handle to further reduce vibration. Constant speed control that automatically applies additional power to the motor to