Pilot Capless Decimo Fountain Pen | 18K Gold Nib | Retractable | Aluminum Barrel | CON-40 Converter Included

Pilot Capless Decimo Fountain Pen — 18K Gold Nib | Retractable | Aluminum Barrel

The fountain pen that solved the problem no one thought was solvable. Since 1963, Pilot's Capless has been the only fountain pen in the world with a fully functional retractable nib mechanism — click to write, click to close, no cap required. The Capless Decimo is the tenth-generation refinement of that original vision: a slimmer, lighter aluminum barrel, an 18-karat gold nib tuned to Pilot's exacting standards, and the same revolutionary click mechanism — now perfected over six decades of continuous engineering. This is not a pen that compromises. It is a pen that proves compromise was never necessary.

Key Features

• Retractable 18K Gold Nib — The defining innovation of the Capless series: a precision-engineered rotating collar mechanism retracts and seals the 18-karat gold nib with a single click, preventing ink from drying out between uses — the only fountain pen in the world that functions like a ballpoint in daily carry
• 18-Karat Gold Nib — Pilot's hand-finished 18K gold nib offers the characteristic flex and feedback of precious metal — responsive to writing pressure, smooth across paper, and tuned to improve with use as the nib subtly conforms to the writer's hand over time
• Decimo Slim Aluminum Barrel — The tenth-generation Decimo features a slimmer diameter and lighter aluminum barrel than the original Capless — refined for writers who prefer a more elegant, less substantial profile without sacrificing the pen's iconic character
• CON-40 Converter Included — The Pilot CON-40 squeeze-fill converter is included, opening the Capless Decimo to the full world of bottled fountain pen ink from day one
• Also Cartridge Compatible — Accepts standard Pilot IC-50 ink cartridges for convenient travel use when bottled ink is not practical
• Clip-Integrated Click Mechanism — The Capless's signature clip doubles as the click button — press the clip to extend the nib, press again to retract. An elegant mechanical solution that has defined the pen's silhouette for over sixty years
• Made in Japan — Engineered and assembled in Japan to Pilot's highest manufacturing standards

What's in the Box

• 1 x Pilot Capless Decimo Fountain Pen (18K gold nib, aluminum barrel)
• 1 x Pilot CON-40 squeeze-fill ink converter

Specifications

• Brand: Pilot
• Model: Capless Decimo (10th Generation)
• Nib Material: 18-karat gold
• Barrel Material: Aluminum
• Mechanism: Retractable click (clip-actuated)
• Ink System: CON-40 converter (included) + Pilot IC-50 cartridge compatible
• Origin: Japan

Who Is This For?

The executive who reaches for a fountain pen in meetings but needs it ready in a second. The writer who has always wanted a fountain pen but found the cap ritual impractical for daily carry. The collector who knows the Capless Decimo is one of the most significant fountain pen designs in history and wants the 18K gold nib version. And anyone who has ever thought: I would use a fountain pen every day if it were as convenient as a ballpoint. This is that pen.

Frequently Asked Questions

Q: How does the retractable mechanism work without the ink drying out?

A: This is the engineering achievement that has made the Capless legendary for over sixty years. When you click the clip to retract the nib, a precision-machined rotating collar seals around the nib and feed, creating an airtight closure that prevents ink from evaporating or drying. The seal is tight enough that the pen can be left retracted for days — even weeks in many cases — and still write immediately upon clicking open. Pilot has refined this mechanism through ten generations of the Capless to achieve the reliability it has today.

Q: What is the difference between the Capless Decimo and the standard Capless?

A: Both share the same retractable nib mechanism and are available with 18K gold nibs. The key differences are in the barrel: the Decimo (meaning "tenth" in Italian, referencing the tenth-generation design) features a slimmer diameter and lighter aluminum barrel compared to the original Capless's slightly larger, heavier body. Writers who prefer a more slender, elegant profile — closer to a premium ballpoint in hand feel — typically prefer the Decimo. Writers who prefer a more substantial, traditional fountain pen weight often prefer the standard Capless. Both nibs write identically.

Q: What makes an 18K gold nib different from a steel nib?

A: An 18-karat gold nib contains 75% gold, which gives it a degree of flex and micro-responsiveness that steel cannot replicate. As you write, the gold nib subtly yields to your writing pressure — not dramatically, but enough to create a more organic, feedback-rich writing experience. Over time, the nib also very gradually conforms to the specific angle and pressure of your hand, becoming increasingly personalized. Steel nibs are excellent and durable, but gold nibs reward long-term ownership in a way that steel cannot.

Q: How do I fill the Capless Decimo with bottled ink using the CON-40?

A: Click the clip to extend the nib fully. Unscrew the barrel from the grip section. Remove any existing cartridge and insert the CON-40 converter into the grip section. Submerge the nib fully in your chosen bottled ink. Squeeze the CON-40's soft body to expel air, then release slowly to draw ink into the reservoir. Wipe the nib and grip section clean with a soft cloth. Reassemble the barrel, click to retract, and the pen is ready. The CON-40 holds enough ink for several days of regular writing.

Q: Can I use any bottled fountain pen ink with the Capless Decimo?

A: The Capless Decimo is compatible with the vast majority of standard water-based fountain pen inks. Pilot's own Iroshizuku ink line is an ideal pairing — formulated specifically for Pilot pens and available in over 24 colors. Avoid India ink, shellac-based inks, and highly pigmented inks not specifically formulated for fountain pens, as these can clog the retractable mechanism. Iron gall inks with very high acidity should also be used with caution and flushed regularly.

Q: Is the Capless Decimo practical for everyday carry and use?

A: It is arguably the most practical fountain pen ever made for daily carry. The retractable mechanism eliminates the cap — no cap to post, no cap to lose, no one-handed uncapping struggle. Click to write, click to close. The slim aluminum barrel fits in a shirt pocket or pen loop without the bulk of a capped pen. Many Capless Decimo owners report that it becomes their single daily carry pen precisely because it removes every friction point that makes traditional fountain pens impractical in fast-paced environments.

Q: How does the Capless Decimo compare to the Pilot Cavalier fountain pen?

A: Both are premium Pilot fountain pens with 18K gold nibs, but they serve different writing personalities. The Cavalier is a traditional capped fountain pen — a brass barrel with marble lacquer finish, weighted and deliberate, designed for the writer who savors the ritual of uncapping and settling in to write. The Capless Decimo is the anti-ritual fountain pen — retractable, slim, aluminum, built for the writer who wants fountain pen quality with zero compromise on convenience. Both nibs write beautifully. The choice is between ceremony and immediacy.