Buy new Outliners by Mack Brushes here. Also known as Liners are for lettering, pinstriping and decorative painting. Out-liners for for exactly what the name says, Out Lining Letters and Pinstripe. Some liners are for fine detail finishing, while large outliners can lay down long lines of paint. Out liners can be used for all types of lettering enamels, gold sizes, varnishes and paints. Some are used for script lining. Brushes for sale listed below!