Shindaiwa 78890-18000, 78890-18001, 78890-11000, 78890-30000. Echo 99944 200907 99944200900 99944200902. Nut size: 1 0mm 1.25mm. Speed-feed 400 Speed-feed-375. look like the right part, but it may not fit your particular machine Reload in 30seconds or less.
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