Fitment:
Stihl FR106, FR108, FS44, FS44J, FS44R, FS48, FS50E, FS50F, FS52, FS52AVE, FS52AVRE, FS55, FS56AVRE, FS56, FS62, FS62AVE, FS62AVRE, FS65AVE, FS65AVRE, FS66, FS66AVE, FS66AVRE, FS70, FS74, FS74AVE, FS74AVRE, FS76, FS76AVE, FS76AVRE, FS80, FS80RE, FS81, FS81AVE, FS81AVRE, FS83, FS83R, FS85, FS85RT, FS86AVE, FS86AVRE, FS88, FS100, FS100RX, FS106AVE, FS108, FS110, FS120, FS120R, FS130, FS200, FS250, FS350, FS450, FS450K, FS550, FS550K
Don't fits with Arbor 1.25 LHF adapter.

• For Stihl FS44 FS55 FS56 FS83 FS88 FS106 FS108 FS120 Weed Eater Weed Wacker String Trimmer
• MPN: 4002 710 2168 4002 710 2191 25-2 Autocut
• Uses .080", .095", or .105"
• Thread size: 10mm x 1.0LHF
• It won't work on trimmers that use coarse thread size 10mm x 1.25LHF

For Stihl FS44 FS55 FS56 FS83 FS88 FS106 FS108 FS120 Weed Eater Weed Wacker String TrimmerSavior