Podoy 4002 710 2191 Trimmer Cutting Head Replacement For Stihl 25-2 FS44 FS55 FS80 FS83 FS85 FS86 Bump Feed String Trimmer Head String Standard diameter of 0.095-inchfit for American Standard Thread, Not fit for International Metric Thread System Arbor sizes :10mmx1.0LHF Uses 0.080", 0.095", or 0.105" Replace STIHL MPN: 4002 710 2168, 4002 710 2191 25-2 Autocut Fit for STIHL FS44 FS55 FS80 FS83 FS85 FS86 FS88 FS90 FS90R FS100R FS100 FS110 FS106 FS108 FS110 FS130 String Trimmer Non original aftermarket part