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Smooth liquid ink, a striking German design and an all-black finish: the Diplomat Aero Roller Ball Pen in Pure Black RT is made for people who want a premium everyday writer with real presence. Its black aluminium body and ruthenium trim give it a sleek, low-key look.

Why choose a roller ball?

A roller ball writes with a water-based ink that glides across the page with very little pressure. You get a smooth, dark line that feels closer to a fountain pen than a ballpoint, without any filling or nib care.

The Aero design

The Aero is one of Diplomat’s signature designs, with a rounded, streamlined shape inspired by the golden age of airships. The aluminium body keeps it robust and gives it a modern, engineered feel.

Size and handling

The pen is 140mm long, extending to 160mm with the cap posted, and has a comfortable 14.8mm diameter. A snap cap makes it quick to open and close.

Ideal for

• Executives and professionals who sign documents daily
• Designers and architects who appreciate industrial styling
• Corporate and personal gifting

Matching set

The Aero Pure Black is also available as a fountain pen and a ball pen, so you can build a complete set.

Diplomat Aero Roller Ball: specifications

• Brand: Diplomat, Germany
• Model: Aero
• Colour: black
• Body: aluminium
• Trim: ruthenium
• Type: roller ball pen
• Cap: snap-cap, postable
• Length: 140mm (160mm posted)
• Diameter: 14.8mm
• Origin: Germany
• Warranty: as per Diplomat Germany international warranty guidelines

Shopping at Makoba

We’re a specialist writing instruments store serving India since 2009. When you order this Diplomat from Makoba, you get genuine stock in original packaging, quick dispatch (most orders before 1 PM ship the same day), and a team on WhatsApp that can help you pick the right refill. Returns on unused items are easy.