Pitt Pigmented Drawing India Ink Artist Pen Box of 4 Line Widths in Black From Faber Castell

Pigmented ink,Maximum lightfastness, Waterproof, permanent, Odourless, acid-free, PH neutral Does not bleed through paper Content: XS = 0.1 mm, S = 0.3 mm, F = 0.5 mm, M = 0.7 mm