Varnish brush. Pro-Extra series features extra-thick, extra-long filaments for outstanding paint-holding capacity and long brush life. We combine Tynex Nylon for softness and ease of paint flow, Chinex for faster clean-up and with self-flagging tip, and Orel Polyester for consistent stiffness retention. Purdy's proprietary tipping and flagging methodology ensures exceptional paint distribution. Pro-Extra brushes are available in a variety of models and ideal for all exterior paints and medium- to heavy-bodied interior flat paints.