100962X Oregon Consumer Spur Sprocket System for Stihl 017, 018 and others

100962X Oregon Consumer Spur Sprocket System for Stihl 017,  018,  019,  021,  023,  023C,  025,  MS 210,  MS 210 C,  MS 210 C-BE,  MS 250,  MS 250 C,  MS 250 C-BE.  Pitch: 3/8" low profile, Tooth Count: 6. 91 Chain only. Economical with good wear resistance. One-piece design For best performance, replace every two chain loops.