Hardness level 2 (medium fonts) Fudenosuke Brush Pen SOFT Calligraphy pen with elastic pen tip Line width varies from very fine to thick due to the pressure exerted on the tip Suitable for calligraphy, characters, sketch notes, zentangles and much more Ideal in combination with the Tombow ABT Dual Brush Pens Water-based with color pigments, odorless. Degree of hardness: 2 - suitable for medium-sized fonts. Font color: black