Genuine Stihl replacement head For use with FS55R, FS55, FS56R, FS56, FS56C-E, FS70RC-E, FS70C-E, FS80, FS85, FS87, FS90, FSA90, FS100, FS130, FS240C-E, FR130T, FR410C-E, FR460TC-EM.