Product Description Set includes 1 each: 01, 05, 08, 10 Light Gray (#42) + 1 each: 01, 05, 08, 10 Cool Gray (#44) + 1 each: 05, 10 Black (#49) These fine-point pens feature waterproof, quick-drying pigmented ink for permanency and true color reproduction. Use for graphics, drafting, illustration or accounting. Experience smooth, skip-free writing and crisp ink colors that leave consistent lettering and lines every time. The archival ink is chemically stable and fade-resistant. It does not smear, feather or bleed through on most papers.