38470X Oregon Power Mate Rim Sprocket System for Stihl 044, 046 and more

38470X Oregon Power Mate Rim Sprocket System.  Fits Stihl 044,  046,  MS 361,  MS 361 C-B,  MS 361 QS,  MS 362,  MS 362 C-M,  MS 362 C-MQ,  MS 362 CQ,  MS 440,  MS 441,  MS 441 C,  MS 441 C-M,  MS 441 C-MQ,  MS 460,  MS 460 MAGNUM.  Pitch: 3/8", Size: Standard 7 Spline, Tooth Count: 7.  Two-piece design includes a drum with a replaceable rim, allowing rim to be replaced multiple times before the entire unit is replaced. Extend operational life by maximizing chain and bar groove alignment. For best performance, replace every three rims.