Description The Diplomat Aero fountain pen in Blue features an anodized aluminum cap and barrel, with a matte chrome section and clip. The nib is available in both stainless steel and 14kt gold options. The Diplomat Aero was created to capture the feel of the Zeppelin airships of the early twentieth century. The rigid exterior of those Zeppelins is brought to mind with the shape and exterior grooves on the pen. The Diplomat Aero fountain pen fills via a standard international converter for use with bottled ink, or standard international cartridges, both of which are included.Some nib options may take 7-10 days for delivery.