DOP68210PA Power Mate Rim .3/8" Pitch-7 tooth fits Partner Chain saws. Standard 7 Spline Rim Only. Fits Partner model 421, 7000, 7700, f55, f65, P100, P400, P500, P5000, P5100, P660, P70, P710, P7700, P85, R-16, R-17, R-18, R-19, R-20, R-21, R-22, R-420, S-50, S-55, S65, W416, W425, W445, W485, W505 Chainsaws.
This rim has to be used with the Oregon brand Power Mate Sprocket.