[Universal for] Compatible with various models, this trimmer head serves as a universal for, offering versatility and convenience for those seeking an alternative to the OEM 25-2 bump feed trimmer head (Part Numbers: 25-2, 4002 710 2108, 4002 710 2191). [Bolt Adapter Compatibility] With a bolt adapter size of 10mm x 1.0 LHF, this trimmer head ensures easy installation and secure fitment on a wide range of equipment, including brushcutters, weed eaters, clearing saws, electric trimmers, Kombi engines, and Kombi tools. [Line Compatibility] Designed to accommodate trimmer lines of varying diameters (.080, .095, or .105), this trimmer head adapts to different cutting requirements, ensuring optimal performance in various landscaping tasks. [Expanded Model Compatibility] Compatible with Stihl models such as FS44, FS55, FS56, FS70, FS80, FS83, FS85, FS90, FS94, FS100, FS110, FS120, FS130, FS200, FS240, FS250, FS260R, FS460R, FR85, FR106, FR130T, FR220, FR350, FR410, FR450, FR460, FR480, FSA90R, FSA130R, FSA135, KM55, KM56, KM85, KM90, KM94, KM100, KM110, KM120, KM130, KA85, KA85R, KR85, and FS-KM, among others. [Warranty and Support] includes one FGIEU 25-2 Stihl Weed Eater Head, backed by a 12-month warranty and lifetime customer support. If any issues arise, customers can rely on hassle-free fors, providing peace of mind for a seamless shopping experience. FGIEU 25-2 Weed Eater Head Trimmer Head 4002 710 2108 comaptible with Stihl FS55 FS55R FS56 FS56RC FS70 FS70R FS80 FS85 FS90 FS90R FS91R FS94R FS100RX FS110 FS111RX FS120 FS130 FS131 FS240 FS250.