Our customers are always searching for a truly opaque white writing pen. The Faber-Castell, 1.5mm felt tipped "Fineliner" Artist Pens are filled with opaque "india" ink*. Waterproof, light-fast and acid-free. A fine companion to the Bindewerk black book or Color Vellum stationery from Original Crown Mill. Store pens horizontally to keep felt tip ready for ink. Made in Germany.