26831 Oregon Power Mate Rim Sprocket System 3/8″ 7 Standard 7 tooth compatible with Husqvarna 266, 268, 272, 61

26831 Oregon Power Mate Rim Sprocket System 3/8" 7 Standard 7 tooth.  Pitch: 3/8", Size: Standard 7 Spline, Tooth Count: 7.  Fits Husqvarna 266, 268, 272, 61.  Fits Jonsered 625, 630, 630 Super, 630 West Coast, 670.  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