This STIHL KombiSystem brushcutter attachment features a 4-tooth blade for weeds and tough grass. 

When line trimmers aren't enough, slide the FS-KM brushcutter attachment into your STIHL KombiMotor. Part of the STIHL KombiSystem, this heavy-duty brushcutter attachment features a 4-tooth cutting blade for weeds and thick, tough grass. Do not use for trimming around obstacles.