Any Jobo film developing tank suitable for inversion processing can be upgraded to a developing tank for rotation processing in combination with a Jobo Processor such as the CPE-3. This magnetic base clicks on the underside of the Jobo developing tank so that it can be immediately attached to a Jobo Processor with a magnetic drive (i.e. without lift).
The magnet can be connected to any developing tank that is equipped with holding pins. This is every Jobo developing tank, new and old, with the exception of the 3000-series developing tanks and the expert drums.