Sold as 1 Dozen.
Won't dry out, even if cap is left off for two weeks. Low-odor, vivid ink.
Nontoxic acid-free ink (no added acid; no measurable pH).
Precision fine tip and comfortable rubber grip.
Acid-Free ink (no added acid; no measurable pH). Marks on just about everything including: glass, metal, plastic, photos, foils, coated paper, oily and damp surfaces.