These brushes feature an advanced blend of high quality synthetic bristle hair. This special bristle is made to be more durable and stiffer than conventional hog hair. In addition it has an outstanding spring and forms a precise edge or pointed tip for critical work. The stiff nature of the bristle facilitates easy handling of heavy bodied acrylics and gels. Each brush has a long maroon handle with a seamless brass plated ferrule. Size 22 is 1" wide; size 40 has a width of 1-3/4".