The dewalt dcm571 flex volt xr trimmer is fitted with a highly efficient brushless motor with a metal housing for increased runtime life durability and efficiency the variable speed control provides a highlow setting for fast job completion over large areas the enclosed and durable xenoy battery housing provides increased protection includes a brush cutter adaptor kit and a brush knife for everything from simple grass trimming to heavy duty clearing work dcm571x1 1 x 1854 volt 9030ah li ion bat