Striper A blend of natural squirrel hair and black synthetic filament combines to provide excellent carrying capacity with control, spring, and precise pointing. Black Velvet brushes are full bodied, with a wonderful snap. Use them with watercolor, silk painting, inks, dyes, acrylics, and gouache. A polished black ferrule crimps the hair and is fitted to a gloss black handle. Enjoy a wonderful range of styles and sizes. Black Velvet Watercolor Brushes, Set of 3 — Black Velvet brushes are a perfect blend of soft, absorbent squirrel hair and fine synthetic filament for spring and responsiveness. This set contains one Series 3007 Script Liner size 1, one Series 3009 Oval Wash size 3/4", and one Series 3008 Round size 8. Note — Brush sizes are not standardized. The length and width of a brush of a given shape and size varies considerably by manufacturer. Since fine art brushes are handmade, expect some variation even among brushes from a given manufacturer.