Demolition hammer SDS-MAX shank. Anti-Vibration Technology (AVT) actively counteracts vibration of tool for greatly reduced transmission to operator. Constant speed control maintains constant speed under heavy load. Soft start feature gradually increases speed to eliminate start up shock. Variable speed dial allows operator to adjust speed based on materials or application. No-load motor suppression limits vibration and bit deflection when idling. Auto-shut off carbon brushes shut off motor when carbon brushes require replacement. Slide style On/Off switch for easy continuous use applications. 12 angle bit positions enable chisels to be positioned at optimum angle of operation. One-touch sliding chuck for easy bit installation and removal. LED service light indicates appropriate time to change carbon brushes. LED power light indicates active power supply. Extra long carbon brushes for extended service life. Vibration absorbing handle with ergonomic soft rubber grip design for vibration absorption and comfortable operation.