Dual-tip brush marker. Aqua Brush Duo Lyra is a dual-tip brush marker of excellent quality. The fine tip can be used for precision drawing, pattern drawing or for creating outlines and detail. The brush head is wide and flexible. This tool enables very soft brush strokes which are also clean and sharp. The nylon fibres give the wide end excellent elasticity for use on large surfaces and make the fine tip stable for finer strokes and precise lettering. Aqua Brush Duo is used by designers, cartoonists and graphic designers to name but a few. Perfect for calligraphy and lettering. The water-soluble colours are odour-free and non-toxic.