Picasso Stylus round continental style synthetic sash brush set with round beech wood handles. Made with the Advantage PBT synthetic filament which is a firmer blend of PBT filament. These brushes have round chisel tips for precision painting and are ideal for sharper and more controlled cutting-in on detail and trim work. The advantage PBT filament blend is excellent when laying out paint, stains and varnish with the brushes filament tips are hand chiseled in acid for even and smooth paint release. No-drip after cleaning design is because it has a fully back-filled epoxy ferrule brush setting.