FS 44, 56, 70, 80, 83, 85, 90, 100 RX, 110, 120, 130, 200, 250. Thread Size: M10 1.25. KM 55, 56, 85, 90, 110, 130. Fit Models FS50E, FS50F, FS51, FS51AVE, FS52. FS120R, FS350, FS450K, FS550 and FS550K.
eBay