Fine-tip brush core

The "Karappo Pen" is an empty pen container that allows you to create a pen with your favorite color ink.
It's easy to assemble and carry, so you can color your planners, notebooks, and more with your preferred ink colors.
It comes with round labels that you can color yourself and attach to the top of the cap!

This is a hard-nib type that allows for line variation depending on writing pressure, making it ideal for illustrations and lettering.
It's also a great idea to make a pen with ink and give it as a gift.