A versatile technical pen for use with all Koh-I-Noor inks. Point sizes range from very fine to very broad for a loose sketching style or a finely detailed pointillist technique. 7-pen set includes a bottle of Koh-I-Noor ink, and the following colorcoded pen sizes: 0.13/6x0, 0.18/4x0, 0.25/3x0, 0.30/00, 0.35/0, 0.50/1, 0.60/2. Set comes in a high quality, clear faced case.