The NIB is probably the most important part of the pen. It's the factor that puts your efforts on paper. That is why we offer tips from quality German manufacturers for our pens. Schmidt are the basic tips that will satisfy the vast majority of pen users. However, for the more demanding we also offer JoWo tips, which are generally considered to be a bit better.

Regarding the material of the nib, the difference between steel and gold-plated steel is rather only aesthetic, because the mechanical properties of the tip are the same. Pure gold nibs should offer a smoother and more constant writing feel and more flexibility. But as usual, everything is a matter of personal opinion and feeling and agreement has not been seen in the 150 years that this discussion has lasted. Titanium tips range between steel and gold in terms of properties and price



The basic path thicknesses for fountain pens are indicated by the letters:

- EF (extrafine) - extra thin
- F (fine) - thin
- M (medium) - medium
- B (broad) - wide

Extra fine nibs tend to be about 0.4 mm thick, 0.5 mm thick, 0.6 mm medium and 0.7 mm thick. However, again, each manufacturer has its own special recipe and it cannot be measured exactly. It also depends a lot on the speed of the handwriting, the absorbency of the paper and other details.

In general, however, I recommend the following tip: The faster and / or sweeping you write, the wider the nib. The smaller your font and / or the lower the writing speed, the better you will appreciate thin nibs.


There are a number of ways to fill pens, basically it could be divided into four groups: dropper, balloon, piston and cartridges. With Kayu pens, you can choose between piston filling and cartridges. However, there is one catch, we solve the piston filling by means of a so-called converter, which is a mechanism that is, however, removable from the pen. Its 'mouth' is also compatible with the 'mouth' of the cartridge, and therefore it is possible to switch between the bombs and the converter to a reasonable extent.
Filling the converter is more stylish, healthier for the pen and you can make it a beautiful ritual. However, it is not so practical, because you need an inkwell and a cloth. The cartridges are very practical, easy to use and our pens always fit one tool, so you will never be left dry. It's just, like a lot today, so hurried and a little unecological.