For fine detail, lines and glazes. Bristle: 1mm widest dia. x 8mm long Over-all brush length: 175mm A traditional round shape is ideal for use when accuracy and detail is required. Each Series 7 brush is tested by hand for perfectly balanced spring, extraordinary capacity, and outstanding flow control.All of Winsor & Newton's Series 7 brushes are handmade in England by their expert brush-makers, with over 40 years of experience. (DIMENSIONS APPROX.)