Uni Pin Fineliner Drawing Pen - Complete Set of 9 Grades - Black Ink Complete set of 9 Black inked Uni Pin fineliner pens, featuring one of each grade. Uni's high quality "Super Ink" is not only water and light resistant, but also "Tamper-Resistant", meaning that the ink can not be washed of using chemicals and solutions used by people to fraudulently modify documents. Ideal for artists, illustrators, and designers alike. Set contains the one of each of the following nib sizes: 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, and 0.8mm.