Replace for 25-2 Bump Feed Trimmer ;Replace Part: 25-2, 4002 710 2108, 4002 710 2191 Bolt Adapter Size: 10mm x 1. LHF;The 25-2 Type: Bump and Feed, the nylon line is automatically adjusted by tapping the cutting against the ground. For Backpack Brushcutters, Brushcutters, Clearing Saws, Electric Trimmers, Kombi Engines, Kombi Tools Perfect : Fits for Stihl FS44, FS55, FS55R, FS56 (2008 On), FS56RC, FS70, FS70R, FS74, FS76, FS80 (1996 On), FS80R, FS83, FS85, FS85R, FS87, FS87R, FS90 (2005 On), Stihl FS90R, FS91, FS91R, FS94, FS94R, FS100, FS100RX, FS110, FS111RX, FS120, FS130, FS130R, FS131, FS131R, FS200 (1997 On), FS240, FS250, FS260R, FS460R (2011 On) Wide compatibility: Fits for Stihl FR85, FR85T, FR106, FR108, FR130T, FR220, FR350, FR410, FR450, FR460, FR480, FSA90R, FSA130R, FSA135, FSA135R, KM55, KM55R, KM56, KM56R, KM85, KM85R, KM90, KM90R, KM94, KM100, KM100R, KM110, KM110R, KM120, KM130, KM130R, KA85, KA85R, KR85, FS-KM Package Includes: 3 x 25-2 trimmer heads. Important note: Please kindly confirm your engine's model and part numbers before purchasing to guarantee that you receive the correct part