A *very* nice, dreamy watercolor brush from Raphael, a 200 year old brush company, this is a collapsible pocket version of the famous French quill mop brush. Long gold brass cap functions as the handle. Versatile brush for washes and line work. Extra fine Siberian blue squirrel hair excellent for water holding capacity. Genuine hand tied goose quill ferrule. Brush hair length: 20mm, Brush width 4.2mm.