Unique marker style pen that performs three functions in one. With a design that attaches two colours of water-based pens alongside a standard pen nib, it is now possible to use the marker in three ways. The user can write in one of two singular colours, or use it to draw with two colours, simply by changing the angle at which it is applied. This efficient pen saves the user the hassle of switching between pens.  Marker Pen Can Draw 2 Lines Simultaneously