This cobalt blue ink from Graf von Faber-Castell comes in an attractive glass bottle with a finely fluted surface. Distinguished by a very unique colour depth, it is document proof & perfect to use with Graf von Faber-Castell fountain pens. Key features: * Material: glass bottle * 75ml of cobalt blue ink * Presented in an attractive bottle * With finely fluted surface * Document proof ink * Unmistakable style of Graf von Faber-Castell * Packaged in a stylish box