Cutter Brushes Bristle for Sign Painters. For rough surfaces like Stucco and Brick wall signs. Cutter Brushes Bristle are used for coating sign enamels, sign latex and sign primers by hand painted. Great for outdoor work, Cutter Brushes Bristle are a very sturdy brushes. Cutter Brushes Bristle Hair information: This type of brush hair comes from hogs in different parts of the world, but the very best comes from China. Hog bristle is different than any other natural fiber, since it forms a V-shaped split or "flag" at the tip, and has a natural curve. This gives it a resistance to fraying and it spreads paint smoothly and evenly. More information on Cutter Brushes Bristle brushes listed below.