Compatible Models: for Stihl FS55 FS55 2-Mix FS55C FS55R FS55R 2-Mix FS55RC FS56 FS56C FS56R FS56RC FS70 FS70R FS70C FS70C-E FS-MM Brushcutter. Gear Head for Stihl FS55 FS55R FS56 FS56R FS70 FS70R Brushcutter #4144 640, 0100 4144, 640 0102.
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