This is Oregon's 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,...