From the manufacturer: These mini versions of Precision and SoftAqua synthetic brushes are perfect for painting watercolor on the go! Precision synthetic sable brushes look and feel like natural sable brushes and feature varnished handles with nickel brass ferrules. These brushes were designed to create accurate brush strokes and hold media well, with a snap that helps retain the shape of the brush from stroke to stroke. Excellent for use with watercolors, inks, gouache and acrylic paint. SoftAqua watercolor brushes combine all the characteristics of a natural squirrel brush with the ease of a synthetic. The wavy, undulating shape of each fiber creates spaces on the bristle that hold an increased amount of water molecules, in contrast to more straight and slippery conventional synthetic fibers. This cutting edge fiber technology allows for SoftAqua brushes to hold twice as much color. Ideal for watercolor, inks and gouache. Featuring black matte varnished handles with a nickel brass ferrule.