Rounded flat brushes feature high quality, exceptionally fine PBT resin bristles - slightly stiff and durable – for a precision painting job. • Their handy grips are crafted in solvent-resistant plastic and have laser-engraved letters “TAMIYA MODELING BRUSH HG II,” plus the size (in Japanese). • Their grip-ends have a small tab to limit rolling and damaging bristles, which can be cut off using side cutters if not needed.