Faber Castel-Polychromous Colored Pencil Set In Metal Tin. Polychromous artists' pencils are valued internationally by professionals and semi-professionals for their unsurpassed quality. The high quality standards of the Polychromous colored pencils shine through whether they are used for graphics artistic free style or for the exact rendition of plans. This 8-3/8x7-3/8 inch metal tin contains twenty-four polychromous colored pencils. Imported.