This pen offers the same quality Pigma Ink performance as the regular Pigma Micron pens with a plastic nib suitable for everyday, multi-purpose writing. The durable plastic nib (PN) provides skip-free writing, and a fine or medium line width (.4mm to .5mm) can be achieved depending on applied pressure. Pigma ink is waterproof, chemical and fade resistant, bleed free, quick drying and pH neutral. Smooth ink-flow Ideal for use on paper Archival ink