This is a Pro Color Pen & Pen Case Set by Yuko Higuchi! Holbein Pro Color Pens. Limited edition design with illustrations drawn by the artist printed on each pen according to its thickness. Includes three thicknesses (0.05, 0.3, 0.8mm) (3 patterns), water-based, black ink, and a pen pouch. *This is a new, unused item that has been stored in a dark place for a long time.