Lettering and coloring your artwork is simple with the no-mess Koi® Coloring Brush pens with a durable tip will quickly spring back to its original shape. These pens perform similar to a paint brush allowing fine, medium, or bold brush strokes just by changing the amount of pressure to the nib. 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 stamps. Use the colorless blender pen to create seamless washes, layering and color gradations. Each pack includes 2 pens. Sold as 6 packs for a total of 12 pens. Recommended age 13+ years