da Vinci"s highest grade Kolinsky Red Sable hair from the Tobol River regions in Eastern Siberia. Expertly shaped, they are unmatched for spring, resiliency, color-carrying capacity & ability to hold a sharp point. Color can be spread thinly and evenly for subtle shades of color, structuring or layering. Excellent for precise, controlled brush strokes, detail work and fine blending. The best oil sable brushes on the market today. Made in Germany.