The synthetic bristles of Artisan brushes are developed from a blend of high quality polyester fibers. They offer excellent spring, durability and strength, and maintain their shape even when in contact with water. This makes them particularly useful during prolonged painting sessions with water mixable oil colors.Sporting seamless nickel ferrules with polished silver handles, these beautiful brushes are designed for use with all oil, acrylic, or Griffin Alkyd Fast Drying Oil Colours .