Oregon 68210 7-Tooth Standard 7 Spline Power Mate Rim Pitch, 3/8" Oregon 68210 Power Mate Replacement Rim used on Oregon 12667X, 13916X, 16208, 18200X, 22209, 23706X, 25842X, 26831, 27189X, 28094X, 28187X, 29313X, 30666X Power Mate Rim Sprocket Systems Also used with Oregon 30672X, 30685X, 35464X, 36868X, 38470X, 68209X, 100757, 102469, 105772X, 106593X, 108565X, 11203X, 111450X, 111590X, 509604X Power Mate Rim Sprocket Systems For 3/8" Pitch Chain Saws with 7-Tooth Rim Standard 7 Spline (Sd7) Sprocket System Replace rim every two chain loops For use on Cub Cadet, Home lite, Dolmar, Echo, Husqvarna, Olympic, John Deere, Conserved, Makita, Master craft, McCulloch, Poulan, Remington, Sears, Skill, Stihl. Please check manual for compatibility