Carbon fibre. Its lightness and strength provides outstanding technical excellence. This high-tech material gives Varius Carbon its power and rigidity in perfect harmony with its silver-plated, rhodium-coated, finish. Fountain pen nibs in 18 carat gold, rhodium-coated available in six different widths. Piston ink pump or Caran d'Ache ink cartridges. The Varius Carbon fountain pen perfectly satisfies your writing comfort requirements.