"• For watercolor and gouache paints; • Finest natural Kolinsky sable; • Short polished birchwood handles; • Seamless nickel-plated ferrules; Winsor & Newton takes only the finest hair from the tail of the kolinsky to form the famous Series 7 brushes. The miniature brushes are crafted to the same superior standards. They are ideal for even the most delicate work., These short handle brushes feature a polished black handle and a seamless, cupro-nickel ferrule combined with high quality sable. They are considered by many artists to be the world's finest." -Blick

This brush is made with natural hairs or fibers.

Natural