The Fudenosuke Brush Pen Hard is a calligraphy pen with a flexible tip, suitable for small writing. The line width varies from very fine to thick, depending on the pressure applied to the tip. It is ideal for calligraphy, lettering, sketchnotes, Zentangle, and much more. Perfect when combined with the Tombow ABT Dual Brush Pens. The pen is water-based with color pigments and is odorless. Hardness level: 1 - suitable for small writing.