This is one Richeson Art 9010 Series
Size 1" Flat Brush, and it is a great option for watercolor works. These brushes are designed to carry the maximum amount of paint, and they are comprised of multiple different types of fiber that are absorbent. The color flows nicely from these brushes without overwhelming the paper. These flat brushes have a nice razor edge that can work very well on canvas works. The wood handles are nicely finished and lacquered for an easy grip and easy handling while working for long periods of time.