This is daVinci´s top of the line watercolor brush and was originally designed for fine detailed work in animation. daVinci's "Maestro" designation is reserved for brushes manufactured using male winter Siberian Kolinsky Red Sable fur. The fat belly, extra sharp needle-like point, and longer tapered hair length result in faster action at the tip and the tightest snap at the point. Expect superior spring and control, plus unsurpassed water-carrying performance. Each brush is carefully tested before receiving the Tobolsky-Kolinsky stamp that adorns the handle of each Maestro brush. All brushes have plated brass, seamless ferrules.