Ink drawings have a very long artistic tradition; ink is a versatile, expressive medium for artists, illustrators and graphic designers alike. The Pitt Artist Pen features pigmented and very lightfast drawing ink ideal for sketches, drawings, layouts, fashion design and illustration. This set is ideal for drawing, sketching, illustration and journaling.Details:Black4 pens (extra superfine, superfine, fine and medium tips)Odor-free, acid-freePH neutralWater-resistant and permanent