A fine, pure Kolinsky tip surrounded by Kazan Squirrel, a size 6. A unique brush originally designed for engineers who had to do very precise striping or long line work. A fine line could be drawn with this brush that would be equal in width over 4 feet long when used by an experienced hand. The center of the brush is made with very long hair and is surrounded by a thick body of hair that acts as the reservoir for paint. The two work as a team to act as a marvelous tool for the artist.