ACME's fountain pen conversion unit will convert an ACME capped rollerball into a fountain pen. All German made, this unit features a polished steel nib with an iridium writing point and includes a converter for drawing bottled ink. This unit is compatible with international standard cartridges and comes with a medium nib. (ACME rollerball models shown on this website that are compatible with the fountain pen conversion unit will mention this option in their description.)
