The new Diplomat Aero Black/Orange Rollerball Pen is designed by detailing every little factors of the first zeppelin airship that took its first fling in early 1900. This unique features a streamline profile with sculpted grooves that resembles with the appearance of a zeppelin. It also includes a metallic grip section that slides perfectly between your fingers and offers a balanced writing experience.

Please note: The Aero pens are anodized. During the anodization process, the raw aluminum parts are placed on a metallic appliance. This is necessary to start the electrolytic process, which always needs a direct current to bring the color into/onto the Aluminium. During the anodizing process at this metallic appliance flows the direct current. The appliance makes it impossible to start the anodizing process at this part. So this leads to the metal-looking stripes inside the cap or barrel.