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The Artline Supreme antimicrobial fineliner is a 0.4mm black fibre-tip pen with a curved pinch grip and water-based ink, sold in a box of 12. It is a neat, everyday writing pen built for offices, classrooms and hospital wards where a clean, fine line matters. Last reviewed: July 2026. What is the Artline Supreme antimicrobial fineliner? It is the black 0.4mm version of Artline's Supreme fineliner range, catalogued as antimicrobial and supplied as a box of 12 pens. The fibre nib lays down a c …