Compatible for Stihl 55, fs 55r, fs 56, fs 56rc, fs56 rc-e, fs 66, fs 70r, fs 76, fs 85, fs 90, fs 90r, fs 91, fs 91r, fs110, fsx110, fs 130R, fs131, fs 240, fs-km, 4mix; Husqvarna 128, 128L, 128LD, 224L, 324L, 323L.
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