The set contains 1 Pigma Micron 005 (0.2 mm), 1 Pigma Micron 01 (0.25 mm), 1 Pigma Micron 02 (0.30 mm), 1 Pigma Micron 03 (0.35 mm), 1 Pigma Micron 05 (0.45 mm), 1 Pigma Micron 08 (0.50 mm) and 1 Pigma Brush pen. Pigma Micron pens are waterproof and permanent fineliners that are loyally used by designers, scientists, archivers, manga artists, cartoonists, illustrators and hobbyists. It is the recommended pen for Zentangle. The fine nib makes this pen ideal for creating both technical and artistic drawings. The Pigma brush is ideal for: Hand lettering, Drawing, Illustrating, Calligraphy and other decorative applications. The unique Sakura Pigma™ ink will not bleed through paper, is permanent, waterproof, fade resistant, quick drying and pH-neutral.