Tomboy's Dual Brush Pens work just like watercolor paints and blend effortlessly. They are fantastic to use for rubber-stamping, card-making and of course as watercolors. The fine tip is perfect for consistent lines and tight drawings. The second tip is highly flexible like a brush - durable, tough and yet soft. Tomboy's ABT Dual Brush Pens are loved by comic designers and graphic designers amongst others.