It is a good factory converter compatible with most fountain pens of the same brand. It replaces the Sailor cartridges, with the unstoppable pleasure and benefit of the inks vary. It is used by dipping the pen in the ink and up the screw piston. Effective and easy to use, the converter comes in a small, thin cardboard box.
Sending particularly well looked after from Japan. Thank you to FujsawaGooniesJP for the speed and quality of its services.