ProMarker twin-tip. Professional Twin Tip marker. Colour pens with two different tips - for detailed work and for colouring. Permanent. Suitable for all areas of art, design and hobby. They are used by architects, cartoonists and manga illustrators as well as by absolute beginners. They are also excellent for scrapbooking and for stamp designs. A characteristic feature is that the colour stays even, even over large areas. Another benefit is that the colours are transparent, meaning you can blend two colours to make a new colour. Just remember to apply the second colour before the first one has dried. If you want to graduate the colour, try using ProMarker Blender.