Great for graphic design, cartoons, sketches, free-hand illustrations, calligraphy and tole craft or as a bold line pen for general writing, Pigma Graphic 1 Pens feature high-quality, quick-drying pigmented ink that is waterproof, fade resistant and will not smear or feather once dry. Fine-point Pigma Micron Pens have waterproof, quick drying pigmented ink for permanency and true color reproduction. They can be used for graphics, drafting, illustration, accounting and more. Developed to meet the needs of calligraphers, illustrators, Manga artists, cartoonists and crafters, Pigma Micron Brush Pens' versatile brush tips create fine lines to broad strokes. The ink is archival, quick drying, will not bleed through most fine paper and will not smear or feather once dry.