The ink in Gelly Roll Classic fine, medium and bold ball point pens is archival, fade resistant, and chemical proof, making it ideal for legal documents, scrapbooks, and any written document where permanence is important. No smears, feathers, or bleed-through on most papers. The 05 and 06 fine point is a 0.3mm line, the 08 medium point is 0.4mm, while the 10 bold point is 05mm.