Fits the following rollerball pens:
ACME®
Aldo Domani®
Aurora®
Bexley®
Bossert & Erhard®
Colibri®
Delta®
Diplomat®
Elysee®
Faber-Castell®
Inoxcrom®
Jean Pierre Lepine®
Krone®
Marlen®
Montegrappa®
Monteverde®
Nettuno®
Omas®
Pelikan®
Retro 51®
Rotring®
Sensa®
Stipula®
Visconti®
Yafa