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. Koi Coloring Brushes are a convenient way to add vibrant color to any sketch, journal, cartoon, illustration, or rubber stamps.
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