Pigma Micron fine pens from Sakura contain the highest quality, pH neutral, archival ink. Made in Japan, these are the most reliable, permanent ink-based disposable fine liners on the market today. The ink is pigment based, waterproof, permanent, fade resistant and the blackest of all the fine liners we’ve come across. Whether you are an illustrator, designer, student, artist or crafter – these pens are perfect for everyone who demands the highest quality from the pens they us. Pigma Micron Pens are available in the nib sizes - 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm and 0.5mm.