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 Ergonomic Handles - New ergonomic shock-absorbing handles provide additional user comfort in all day applications. Non-Slip Housing Cover - Rubberized housing cover helps prevent the tool from accidental fall over when the tool is not in use. Total portability Operates on 115/120V AC/DC, 15 amp. outlet or 2500 watt portable generator. ServiceMinder brush system, Shuts the Brute, off when brush replacement, lubrication or preventative maintenance is needed. Grease packed gear box and hammer mechanism. Eliminates uncertainty of job site lubrication.