da Vinci 5590 and 991 Series Petit Gris brushes are made of a blend of Russian Blue Squirrel hair and a synthetic fiber. They feature natural wood handles coated with transparent lacquer and seamless, nickel-plated brass ferrules that are rust-resistant.

The Series 418 Quills are made of pure Russian blue squirrel hair. They feature natural wood handles coated with transparent lacquer and plastic quills.