The long, golden hairs of this watercolor brush come from male Siberian Kolinsky red sables. This brush has a very long, tapered tip and a fat belly and was originally designed for the fine detailed work in animation. The amount of exposed hair is longer than a traditional style watercolor brush providing for full color in every long line and stroke. The top of daVinci's watercolor line, each brush is carefully tested before receiving the handle of Tobolsky-Kolinsky stamp that adorns each Maestro brush sold.