Faber-Castell Pitt Artist Pens - 4 Black India Ink Pen Wallet Set - Assorted Nibs Artist Markers (S,F,M,B Nib Styles) 4 PITT ARTIST PENS - Features 4 Black Pitt Pens in a variety of nib styles, perfect for a variety of art applications. Includes S (Superfine .3mm), F (Fine .5mm), M (Medium .7mm) and B (Brush 1-5mm) artist markers PREMIUM QUALITY INK - Faber-Castell Pitt Pens feature the very best quality India Ink ink that is highly pigmented, lightfast, water and smudge resistant, permanent, odor free, acid-free and pH neutral BLACK PITT PENS - Faber-Castell Black Pitt Artist Pens are a universal artist marker that can be used for a variety of sketches! This highly lightfast marker is a favorite for artists, calligraphers and hand lettering enthuasists of all ability levels WORKS ON A VARIETY OF SURFACES - Premium India Ink will not bleed through your pages and the colors can be layered on paper, canvas, books, journals or a variety of artwork and sketches FABER-CASTELL QUALITY ART MATERIALS - See your artwork come to life with the absolute best quality art materials. Faber-Castell has produced quality art materials since 1761.