Lyra Polycolor Grey Tones 12 Set provides visual artists, architects, and graphic designers with a highly precise, curated palette of warm and cold grey nuances. Formulated with rich, lightfast pigments, these German-engineered oil pencils include unique soft and hard black tones that are not found in the standard color ranges. The entire monochrome assortment is safely organized in a protective silver metal box to ensure your tools remain secure from the studio to the field.