Why choose Biuhpa?. Model compatibility: Replaces Autocut 252; fits Stihl FS55, FS56, FS70, FS80, FS90, and many more models as listed. Compatibility and fit: Carefully engineered to replace parts for Stihl models including FS55, FS55R, FS56, FS56RCE, FS44, FS48, FS50, FS51, FS52, FS60, FS61, FS62, FS65, FS66, FS70, FS74, FS76, FS80, FS81, FS83, FS85, FS86, FS88, FS90, FS91, FS96, FS100RX, FS106, FS108, FS110, FS120, FS130, FS240, FS250, FS350, FS450K, FS550, FR106, FR108.
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