Hongdian Fountain Pen Blue Ink Cartridges, Set of 30 Refill Ink Cartridges, 3.4 mm Bore Diameter

I bought these cartridges to use with my Hong Dian M2 fountain pen. Used a green cartridge first without problems. But when I wanted to use a light blue cartridge it would not click into the pen. I compared all the cartridge colours and discovered that the tops of the blue and light blue cartridges are different! The shape of the top is clearly different and there is a very slight difference in the height of the cartridges as well. This is clearly visible in the pictures. Obviously there was a problem with the production process. My pen came with a converter and I can transfer the ink, but I should not have to with cartridges that are meant to fit this specific brand and model pen. I won't buy them again.

Zgodnie z opisem produktu: 6 opakowań różnych kolorów po 5 wkładów do piór marki Hongdian.

Sinceramente ,crei que sería acuosa pero es consistente y colores definidos. Me ha gustado mucho aunque por otro lado debido a su especial boca y el tamaño que tiene, no hay más remedio que usarlos.

Buen artículo para la pluma fuerte

een vulpen die heel fijn schrijft en waar je vele kanten op kunt.