The Kuretake Fountain Brush Pen is a combination of a fountain pen with a fude brush tip. The metal pen body gives it the perfect durability for carrying it around. The brush pen is refillable with cartridges, and comes with three black, pigment ink cartridges per pack. It is also compatible with Platinum fountain pen converters, allowing you to try it out with different ink colors. Kuretake dye-based ink cartridges and pigment ink cartridges are also available for this fountain brush pen.