These brand new, factory original nib units can be used in any S.T. Dupont Line D Large fountain pen - the plating color specifically matches Line D Large platinum trim pens.

Our complimentary nib tuning adjusts optimum ink flow and pressure to your own personal preferences. S.T. Dupont 14k nib units also serve as excellent starting points for many of our exclusive nib customizations - choose the Extra Fine or Fine for best results with Flex, or Broad for our popular Architects Point modification.