Stainless steel spring for Aero with matt chrome fittings, strength F

Replacement spring unit for Diplomat Aero fountain pen

Writing with the Aero fountain pen from Diplomat is really a lot of fun. If the nib or the ink duct was damaged by a fall or improper handling, it is not necessary to replace the whole pen. For this case, the replacement nib from Diplomat is recommended, especially for the great Aero.

The Diplomat nib units are also a great and inexpensive alternative if you want to write temporarily with a different nib strength. For writing greeting cards you may want a thicker nib and for your daily notebook you may want a thinner nib. You can achieve this by quickly changing the nib unit.