Mack Series 840 Outliner Pinstriping Paint Brush Choose Size: #4/0, #2/0, #0, #2 OR #4OR Set of All FourThe #840 Outliner is made with synthetic squirrel hair. This is a new synthetic that gives you the benefits of a natural haired brush. It is a soft hair that holds a lot of paint and gives you good snap. Sizes000000024Length Out1″1 1/8″1 3/8″1 5/8″1 3/4″