Each Spectrum Aqua Marker is dualtipped at one each there\'s a soft brush nib for flexible line control and a more natural art surface feel and at the other a precise fine tip for definition and accurate line work. Spectrum Aqua is a great addition to conventional waterbased paints and other colour media. Its high quality dyes give flawless even coverage with all the definition and vibrancy you need. Then using water you can diffuse and seamlessly blend colour to create the lifelike tones and ...