Equipt with Power drive transmission for increased torque and performance Features 2-Speed control option for more power OR extended runtime Automatic feed spool (AFS) automatically feeds trimmer line, no bumping required Used as a trimmer for aggressive cutting or wheeled edger for precise edge work Part of the BLACK+DECKER 20V MAX System; 20V Battery can be used interchangeably with your other BLACK+DECKER 20V Tools