fineOne by Neuland® ArtMarker in the unfilled version - fillable with water-based ink RefillOne.
* plus VAT / plus shipping costs
The transparent marker without ink filling allows you to see exactly what is happening during the refill process - and after filling it can be used usual.
without ink, refillable with water-based ink
flexible nylon nib,
line widths: 0.5 - 5 mm