4 pieces in a case in 4 point versions: S, M, 1.5 Color black and B color red. Ideal for sketching, studying and ink drawings. Particularly suitable for hand lettering. Ink with high light resistance. The light resistance is provided with an asterisk in every color: *** very good LB / ** good LB. / * sufficient LB. Long service life and high comfort. Permanent after drying. Fast drying. Fixed point.