This Size 7 lettering brush by Mack is made with the finest Brown Kazan Squirrel hair and measures 1-3/16 inches. Constructed in France and Germany by hand, it features a red lacquered handle and graduated hair lengths. Brown quills are slightly softer than grey quills and are best suited for smooth surfaces such as glass or automotive surfaces. This highly specialized brush is an essential tool for every sign painter's kit.