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The Makita 80V max (40V max X2) XGT 70 lb. 1-1/8-inch Hex AVT Breaker Hammer delivers 53.7 ft. lbs./72.8 Joules of Impact Energy (0-870 BPM) and can demolish up to an 8 feet by 6 feet by 4 -inch thick 5000 psi concrete slab using two fully charged batteries. The breaker features Anti-Vibration Technology (AVT), which is an internal counterbalance system along with vibration-absorbing handles that work together to reduce up to 30% less overall vibration. It also includes an Auto-start Wireless System (AWS) which utilizes Bluetooth for wireless on/off communication between the tool and dust extractor.