Product Review

These Graf von Faber Castell ink cartridge refills in Cobalt Blue come 6 to a box. The high quality of this vibrant-colored fountain pen ink requires its own formula and the highest quality pigments. The excellent quality shows itself in the even flow of ink and the fact that you can start writing with the fountain pen almost immediately, even after long breaks. Each cartridge is 0.86 ml. Ink is document proofed.