BR83. Interlon Brush 1026.
These affordable watercolor brushes are made in Japan and are perfect for fine details and precision painting. Special Interlon (interlocking nylon) synthetic blend prevents your bristles from spreading, meaning your brushes will last through many sessions of painting and calligraphy. Even if you bend the bristles, simply soak them in hot water and they'll return to their original state. Durable yet supple and moderately stiff, great for brush lettering and botanical illustration. Compatible with watercolor and gouache.