Solid round filaments tapering from base to tip. For use with emulsion and other water-based paints, stains and compounds, including varnish, wood stain and lacquer. Stainless steel ferrule for durability and corrosion resistance. 3pce set includes sizes 25, 40 and 50mm. 5pce set includes sizes 19, 25, 40, 50 & 75mm.