Rosetta JoWo #6 Fountain Pen Replacement Nib Unit, Black OxideWith feed unitBlack oxide plated stainless steel nib by JoWo of Germany, part #6. Will fit pens accepting the JoWo #6 nib unit, including the Rosetta Magellan, North Star and Vulcan Metal Series fountain pens (requires the JoWo version grip section; grip section not included but sold under Rosetta Replacement Parts). Does not fit the Rosetta Explorer, Napoleon or Coronado Series. JoWo #6 nibs are among the best German-made steel nibs available today. They are used by many of the fine