Get the best of all worlds with this versatile pen set. Each pen contains the finest quality pigmented India ink that is permanent, waterproof, archival, lightfast and odorless. With assorted nibs of various widths, you will find yourself reaching for these pens for multiple uses. Details:BlackIncludes assorted nibs (fine, superfine, medium, brush)10 packs (4 pens per pack, 40 total pens)Permanent and waterproof ink