For Wayne submersible sump pumps. Contains 1 each switch and 1 each square ring gasket. This kit suitable for model No. CDU-790, CDU800, SSF33, and SSM50 pumps. For pumps manufactured prior to January 1, 1985, where float arm does not have pivot pin, it may be necessary to use part model No. 23145 float arm and bellow to reseal switch.