Tinta Pluma Graf Von Faber-Castell - Cartridges Cobalt BluePresentacin: Cartridges (set contiene 6 unids). Color: Azul Cobalto Cartuchos de tinta estndar azul cobalto 6 ink cartridges, Cobalt Blue The manufacture of our indelible inks for fountain pens is an art form. Each one of our different vibrant colours inspired by nature requires its own formula and the highest quality ingredients. The excellent quality shows itself in the even flow of ink and the fact that you can start writing with the fountain pen