20 Series Mack Pinstriping Brush Size 0 Fine This sword-style brush is the best for all-around work. Used by leading body shops around the world for paint touch-up and pinstriping. Made from 100% unmixed squirrel hair, this brush is lacquer- and enamel-resistant. Brush is approximately 4-1/4" long with 2" length of hair.1/4" Head Width. Made in USA.