A set of all 6 sizes of the Sakura Pigma® Micron pen. Includes one BLACK pen of each size: 005 = 0.20mm 01 = 0.25mm 02 = 0.30mm 03 = 0.35mm 05 = 0.45mm 08 = 0.50mm The Pigma® Micron is a fine-point drawing and illustration pen that utilizes the highest quality archival formula -known as Pigma ink. Six line widths handle serious technical and artistic applications. These pens are ideal for archival recording, illustration, graphic art, scrapbooking, freehand manga drawings, and decorative fabric design. A preferred drawing tool for the art of Zentangle! All Micron pens are non-smearing when dry, waterproof and chemical proof, fade-resistant, and don’t bleed through most papers. Pigma Micron pens were the first water-based pigment ink in the consumer market in 1982- used in private institutions and Universities throughout the world for all types of research and preservation requirements. Meets ACMI non-toxicity standards.