Wooster Brush 5231 Gold Edge Angle Sash Paintbrush is made with an exclusive formula of chemically tipped (CT) polyester. This filament is very soft and fine to virtually eliminate brush marks, yet it has added stiffness to push paint farther on the surface and provide control for sharp, single-pass cuts. Excellent for all paints and enamels, Gold Edge brushes offer semi-professional results. Size: 3 inch.