Maestro Kolinsky Travel Brush 1503: The Maestro travel brush features the highest quality Selected Winter Male Kolinsky Red Sable hair from the Tobol river region in Eastern Siberia. In this region, hair from male, winter tails grows the longest and strongest due to the extreme cold. Expertly shaped, these brushes are unmatched for spring, resiliency, color- and water-carrying capacity and their ability to hold a sharp edge or point. They are excellent for precise, controlled brush strokes, detail work, illustration, and restoration. Shaped like Series10 for maximum resilience and snap at the point.