Series 5040 uses the same 5 diameter design and philosophy behind the series 5080 ultimate wash but utilizes a slightly and stiffer longer fiber to give it extra strength and stiffness while still retaining a smooth, strokeless finish. An outstanding top of the line brush for oil, acrylic, water-mixable oils, priming and varnish. Great for washes in watercolor and fluid acrylic, and for gessoing. Available in sizes from 20mm to 300mm wide.