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Part description: Stihl 4002 710 2189 trimmer head
20-3 trimmer head
Uses three Polycut blades
Left hand M10 x 1.0mm thread.
For trimming grass and weeds
Trimmer head for Stihl FS55, FS56, FS70, FS80, FS83, FS85, FS90, 100RX, FS110, FS120, FS130, FS200, FS250, KM55, KM56, KM85, KM90, KM110, KM130