Faber-Castell has combined all the advantages of artist inks with the benefits of a modern, practical, and easy-to-use pen: the Pitt Artist Pens. The pigmented drawing ink is ideal for sketching, artistic drawing, layouts, design, and illustration, and is especially suitable for professional use. The light colors are transparent, ideal for varnishing techniques, while the darker colors offer excellent coverage. Pitt Artist Pens have unparalleled lightfastness and are water-resistant after drying. Each color is indexed with an asterisk (*), which indicates its degree of lightfastness: *** up to 100 years, ** up to 50 years, and * up to 25 years.