Description Warranty Information Product DescriptionSakura Pigma Micron Pens 03 .35mm 6/Pkg-Black, Blue, Red, Green, SepiaThese pens have a waterproof, quick-drying pigment ink that will not feather or bleed through even the thinnest papers.The inks are smearproof once dry and fadeproof against sunlight or UV light.This package contains six 5.25 inch long pens in assorted colors with .35mm tips.Archival quality.Conforms to ASTM D 4236. Manufacturer Warranty - USA Only