Raphaël's Kaërell Flat Brushes are made with synthetic bristles, but you wouldn't know if we didn't tell you! Get the quality, suppleness, and elasticity of Raphael brushes at a much more economical price that traditional sable hair. Kaërell brushes are soft, versatile, durable, easy to clean, and have excellent color and water carrying capacity. Nickel-brass ferrule and a red handle. Compatible with watercolor, gouache, acrylics, and oils.