Wich harmonicas can be configured by the Tuning Designer?

You can choose among almost every Chromatic and Diatonic Richter harmonicas made by Hohner.
This is the biggest offer in the market.
If you can't see the navigation bar on the right side where you can choose from the whole range of Hohner harmonicas as it can be modyfied in the Hohner Tuning Designer, simply click the Union Jack in the left upper corner of the page, and the navigation bar will appear.