The Pentel brush pen is perfect for achieving amazing, smooth line variation with one pen. The synthetic bristles are able to go from an ultra fine point to a large wide stroke easily and quickly. This makes the brush pen an ideal tool for those creating dynamic comic and manga art or traditional lettering and calligraphy. This Pentel brush pen is clean and simple to use and a secure cap makes it pocket safe to take with you. Each of the refill cartridges contain a high quality water and fade resistant black pigment ink. -Brand: Pentel - Fade and water resistant pigment ink - Includes 4 refill cartridges - Achieve a wide variety of line widths in a single stroke