Oregon 543767 Power Mate Replacement Rim used with Oregon 544658X, 544679X, 544680X, 544689X, 552412 Power Mate Rim Sprocket Systems. For 1/4" Pitch Chain Saws with 9-Tooth Small 7 Spline (Sm7) Rim Sprocket system. Smoother cutting and less chain wear than spur sprockets. Replace rim every two chain loops. For use on Stihl, Echo, Husqvarna, and Poulan Saws.
