Pitt Artist Pens® are the perfect tools to create colorful mandalas. The brush nibs are ideal for drawing wide strokes and the super fine nibs create crisp, thin lines for outlining designs, tracing the included stencil art and adding detailed accents. India ink is waterproof, odorless, permanent and lightfast. Colors can be layered and the inks won't bleed through. Perfect on paper or canvas and in books or journals. Store horizontally when not in use.