Round brush from synthetic squirrel imitation. 
Short wooden handle feels right in the handle. 
This series is versatile in its application: for watercolor, gouache, acrylic, ink (all types of water-based colors). The brush is perfect for calligraphy, because it absorbs much water and a needle-sharp point easily transfers it to the paper with long thin lines.
Application: Watercolor, Gouache, Acrylic.
Stiffness: 0