Milwaukee Breaker, 1-1/8 in Chuck, Hex Chuck, 1300 bpm Blows per Minute, 50 ft-lb Impact Energy, Ergonomic Handle, Lithium-Ion BatteryMX FUEL TechnologyFaster, safer, easier demolitionMost productive, lowest vibrationLightest weightLED lights, provides light at the chisel in dark applicationsAnti-vibration body, limits excess vibration and provides a comfortable grip while operating1-1/8 in hex tool holder, maximum durability for the most demanding applicationsOne-key compatible, track and manage equipment from your computer or mobile device using the industry's largest Bluetooth community tracking networkFront handle, for easier transportation and maneuvering throughout the job site