The ABT Dual by Tombow is a brush Pen with two tips. The fine tip is perfect for drawing drawing exact lines. and the second tips is thicker and more flexible like a brush. The ABT Dual are available in 95 vivid colours and a blender. They are water-based and the colours can be mixed together imitating watercolour paints. They are perfect for creating cards, sketching, illustrating and drawing comicand much more. Due to the watercolour nature, they are not light resistant.