This should be a XDD toys.

The delivery went fast and satisfactory overall.
The Refiller itself has about 2 weeks in use and working properly.
Simply plug into the inkwell and raise. Then, the ink is in Refiller
and you can use it like a normal cartridge.
A little tip: The cartridge ausenrum once edge with an ink eraser.
Then stay no ink auserhalbe the cartridge and there is no mess. :-)

Overall a very good product