Brushless motor offers increased runtime and durability with reduced maintenance Perform & Protect: low vibration at 6.1m/s², minimising user fatigue and increasing productivity Floating mechanism for fully encased vibration reduction Dewalt 54V FLEXVOLT Brushless 28mm Hex Demolition Hammer - Kit POWER OF CORDED. FREEDOM OF CORDLESS. The DEWALT 54V brushless motor and 15AH high capacity battery deliver 41 Joules of impact energy for the toughest demolition jobs on site. Despite its high performance the DCH911 features class leading vibration of 6.1m/s2 thanks to a floating mechanism. Wireless Tool Control enables automatic stop start dust extraction when used with the DCV586M Cordless M-Class Extractor. Features: Brushless motor offers increased runtime and durability with reduced maintenance Perform & Protect: low vibration at 6.1m/s², minimising user fatigue and increasing productivity Floating mechanism for fully encased vibration reduction Class leading 41 joules of impact energy