Replacement OEM: 25-2 bump feed trimmer head, replaces Autocut 25-2, 4002 710 2108, 4002 710 2191 Fits Models: Fit 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), FS90R, FS91, FS91R, FS94, FS94R, FS100, FS100RX, FS110, FS111RX, FS120, FS130, FS130R, FS131, FS131R, FS200 (1997 On), FS240, FS250, FS260R, FS460R (2011 On) weed eater Fits Models: Fit for Stihl FR85, FR85T, FR106, FR108, FR130T, FR220, FR350, FR410, FR450, FR460, FR480, FSA90R, FSA130R, FSA135, FSA135R, KM55, KM56, KM85, KM90, KM94, KM100, KM110, KM120, KM130, KA85, KA85R, KR85, FS-KM trimmers Material and Dimension: Trimmer head is crafted from durable, abrasion-resistant plastic and nylon line. Bolt size of 10mm x 1.0 LHF, compatible with 0.080", 0.095", or 0.105" trimmer lines Bump Feed Design: As soon as it touches the ground, the trimmer line inside the weed eater head automatically advances, providing a new section of trimmer line. Bump feed trimmer head for backpack brushcutters, brushcutters, weedeater, clearing saws, electric trimmers, kombi engines, kombi tools 25-2 Trimmer Head