Short brown handled with metal cover. Carry this clever travel/pocket brush with you and your traveling studio will always be ready wherever you go. Metal cover can also use to extend the handle. A Reversible Pocket brushes that can use for outdoor painting. kolinsky mop brush is a full version of the wash brush, made of soft, absorbent natural hair. It is useful for laying in large areas of water or color, for wetting the surface, and for absorbing excess media. brush use for watercolor, tempera and acrylic.