The Pigma Micron is a fine-point drawing and illustration pen that utilizes the highest quality archival formula -known as Pigma ink. The Pigma Micron is ideal for archival recording, illustration, graphic art, scrapbooking, freehand manga drawings, and decorative fabric design. All Micron pens are non-smearing when dry, waterproof and chemical proof, fade-resistant, and don’t bleed through most papers. Meets ACMI non-toxicity standards. The 3 piece set includes 1 each: 08, 10, 12 all in Black.