Silver Brush Black Velvet brushes are made from a blend of Squirrel hair and a new type of synthetic filament called Risslon. Because they are blended, these premium short-handled brushes possess the durability and spring of a synthetic brush, and the liquid-holding capacity of a squirrel mop, making them a great investment for any watercolorist. They are designed for use with water-based paint; principally watercolor, inks, dyes and silk paints.The black Risslon filaments are mounted in black ferrules. Just behind the ferrule, the brush bears a distinctive silver neck band which contrasts with the glossy black finish of the handle.This is a Series 3000S Short-handled Round, Size 2.