Fill important details on checks, legal documents and log books using this Micron fine line pen set from Pigma. You can also use this set for illustrating, decorate greeting cards and other papercraft projects. Details:BlackSize 08 (0.50 mm)6 packs (6 pens per pack, 36 total pens)Does not feather or smear when dryWill not bleed through most papersWaterproof, archival quality, permanent, fade- and chemical-resistant Pigma inkMeets ACMI non-toxicity standardsConforms to ASTM D-4236Not for use on fabrics that will be washedNot for use on skin