Series 1311 has a thick belly that feeds a sharp painting edge, laying down even washes with great control. The maestro designation denotes the highest quality winter male Kolinsky red sable hair from the Tobol River region in Eastern Siberia. Excellent for watercolors, gouache, illustration, animation and rendering. Brushes are handmade from raw material to finished brush by skilled artisans at the da Vinci factory. Certified green manufacturing at the da Vinci factory in Germany.