The Winsor & Newton Professional Watercolour Sable Brush Round No.6 is a high-quality brush designed for professional watercolour artists. The brush is made from the finest quality sable hair, which is soft and flexible, allowing for precise control and a smooth, even application of paint. The brush has a round shape and a long handle, making it ideal for detailed work and for painting in tight spaces. The brush is also suitable for use with a variety of mediums, including watercolour, gouache, and acrylics. The brush is easy to clean and maintain, and is designed to last for many years. With its superior quality and performance, the Winsor & Newton Professional Watercolour Sable Brush Round No.6 is an excellent choice for any artist looking for a reliable and durable brush.