Tombow ABT Dual Brush Pen is a marker with two tips. The fine tip is perfect for consistent lines and detailed drawings, while the second one is highly flexible like a brush. This tip is durable, tough and soft -bullet perfect for applying colour to large areas. The colours are water-based and can be used like watercolours, and they can also be blended. For this purpose, apply the colours to a glossy surface, e.g. An old CD, and blend them with the help of a paintbrush and water. These pens can be used for a variety of techniques and are popular for use with card-making, stamping, sketching, comic drawing, illustrating, and much more. Please note that ABT Dual Brush Pen colours are not lightfast. Finished artwork should not be exposed to direct sunlight.