High quality markers with archival quality ink. Chemically stable, waterproof and fade resistant, they do not bleed through most papers. Ideal for graphic art, pen & ink illustrations, cartooning, sketching, and more.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. Fine lines, shading, textures, and colouring in images can easily be mastered by the hobbyist.Specifications: archival quality ink, chemically stable, waterproof, fade resistant