Oregon Pro Spur Sprocket (3/8" X 7) for Stihl 029, 034, Ms 290, 310

Oregon 38145X Replacement Pro Spur Sprocket (Bearing 37325 sold separately) For 3/8" Pitch Chain Saws, 7-Tooth Sprocket Replacement schedule: Every two chain loops For use on Stihl 029, 034, 034 Super, 036, 039, MS290, MS310, MS311, MS360, MS390, MS391 Saws. Rugged and dependable, with excellent wear resistance