Unmatched Power-to-Weight Ratio - With 60% more impact energy than the original Brute and weighing in at just 65 lbs, the new Brute has the BEST concrete removal rate in its class. The New Brute is the hardest hitting hammer in its class. Active Vibration Control : Vibration reduction in the hammer mechanism and the grip area provides maximum user comfort for extended periods of work; 50% LESS vibration than the 11304. Total portability ? Operates on 115/120V AC/DC, 15 amp. outlet or 2500 watt portable generator. Non-Slip Housing Cover - Rubberized housing cover helps prevent tool from accidental fall over when the tool is not in use. Ergonomic Handles - New ergonomic shock absorbing handles provide additional user comfort in all day applications.