Karappo Pen (Empty) Fine Brush Tip w/ Cartridge

Kuretake Karappo-pen Cartridge type empty pen for use when making pens with your favorite color ink. Customizable brush pen with a semi-flexible, thin brush tip that easily writes both thick and thin strokes. Insert your favorite ink colors into the refill cartridges using the insert tool provided. By adding and removing cartridges, the Karappo-pen can be used repeatedly, interchanging inks whenever you want.