This set includes a Series 418 Russian Blue Squirrel hair quill round size 2, plus a Series 1526Y Kolinsky Sable Round size 2. The HARBIN KOLINSKY provides a fine point while the PETIT GRIS DUR is a large quill mop for wash techniques. Two excellent quality brushes that work in harmony together for watercolorists. The high-quality, extra-elastic Kolinsky Red Sable fibers in the HARBIN KOLINSKY provide high color absorption, making it easy to paint all details perfectly. PETIT GRIS DUR is generously sized and hand shaped, the unique point allows for full strokes across the paper while its huge reservoir lays down large amounts. Certified green manufacturing with sustainable wood handles made in Germany at our family-owned factory since 1890. Recommended age 2+ years