Faber-Castell has combined all the advantages of artist's inks with the benefits of a modern, easy-to-use disposable pen - the PITT artist pen. This extensive set of 60 brush pens contains pigmented and very lightfast drawing ink, ideal for sketches, drawings, layouts, fashion design and illustration. The acid-free, archival ink is smudge proof, waterproof and won't bleed through paper. Product Details: - Pigmented India ink- High lightfastness- Flexible brush tip, retains its shape- Waterproof,