Designed to meet the specific needs of illustrators, cartoonists, and manga artists, the variety of drawing nibs broaden the available illustration techniques that can be used. Pigma graphic ink pen features archival quality pigma ink, will not smear or feather when dry, waterproof and chemical proof, fade resistant, does not bleed through most papers, meets astm and acmi nontoxicity standard, not recommended for use on fabrics intended to be washed and not evaluated for cosmetic use on skin. Applicable on graphic art, cartooning, sketching, illustrations, scrapbooks, fabric projects, tole painting. Set includes 3 Pigma graphic in 1mm, 2mm and 3mm brushes.