Coloring your artwork is easy anywhere, anytime with the no-mess, dye-based Koi Coloring Brush Pens. These pens perform similar to an artist brush. Make fine, medium or bold brush strokes just by changing the amount of pressure to the nib. The durable tip will quickly spring back to its original shape. The odorless, water-based solvent facilitates smooth blending and layering of colors. Koi Coloring Brushes are a convenient way to add vibrant color to any sketch, journal, cartoon, illustration or rubber stamp. This starter set meets most color range needs as the inks blend easily to create a multitude of hues and effects. Includes Yellow, Orange, Light Pink, Brown, Red, Hot Pink, Purple, Light Blue, Light Green, Dark Green, Dark Blue and Black.