The Winsor & Newton Cotman Series 111 Brush No.10 is a high-quality brush designed for use with watercolors, inks, and other water-based media. It features a round, synthetic filament brush head with a short handle for precise control. The brush head is made from a blend of synthetic fibers that are designed to hold their shape and provide excellent color-carrying capacity. The handle is made from a lightweight, durable plastic that is comfortable to hold and easy to clean. The brush is ideal for creating fine details, washes, and broad strokes. It is also suitable for use with a variety of surfaces, including paper, canvas, and wood. The brush is easy to use and maintain, and is a great choice for both professional and amateur artists.