The machine consists of a mowing head with cord-filaments rotor, positioned parallel to the ground surface. During the working phase, and by means of the centrifugal force in the rotor, the cords will reach and shred the stem's weed and the grass in between. Absolutely clean results without damaging the tree trunks and even light stems! The innovative rotor (International Patent of BERTI) built with 16 cord filament sections, allows extremely quick and easy cord feed, minimizing downtime and maintenance operations (!!). The rotor case adjustable in all directions, guarantees the maximum of flexibility on the most variety of applications.