Sailor Kiwaguro nanocarbon ink is a deep matte ink specially developed for pens, which is water and scatter resistant, gives a specific line, does not penetrate the paper and does not clog the pen. The manufacturer also recommends that you use this ink to sign official documents.
* 12 ink cartridges in a box
* Black nanocarbon ink
* Does not clog pens
* Does not penetrate paper
* Best for signing official documents.