Create sketches, drawings, and layouts that last by using this Faber-Castell PITT artist pen, which has a nib size of 0. 7 millimeters. It uses odor-free black pigmented India ink for pro-grade performance while providing the comfort, control, and convenience of modern disposable pens. Rely on permanent ink for excellent lightfastness and a waterproof, acid-free, and pH-neutral formula that works well for archival projects. This PITT artist pen doesn't smudge to ensure quality results.