Best Big-Nib Fountain Pens of the Year: Five Oversized Writers Worth a Look

Introduction

Every year produces a handful of pens that genuinely outperform expectations, and this year the common thread is unmistakable: big nibs. All five pens here carry a number eight or even number nine nib, span a wide range of prices, and every one of them earned its place through actual daily use. These are not pens that sat in a drawer. They were written with, filled, and carried until they proved themselves.

Some are inexpensive, some are firmly in premium territory, and one was received for review purposes, but each earned its spot the same way: by writing beautifully every time the cap came off.

Jinhao 930

The Jinhao 930 is enormous, bigger than a Montblanc 149, though it clearly takes its design inspiration from that classic shape. It carries a number nine nib and a piston filling system with a good ink window for monitoring levels. The nib unit can be disassembled if you want to service it, though you will need a wrench to do it.

The unit arrived leaking, but after tightening the nib unit the problem disappeared entirely. The medium nib is not a thin medium; it runs generously wide, and it is beautifully smooth and wet, writing consistently even as the ink level drops without ever running dry. If a broader tip ever appears, that would be worth grabbing too. Smaller versions exist for people who find big pens intimidating. At roughly $54, it is hard to argue with the value: a genuinely excellent writer for the money, and nobody who owns one seems to have complaints.

Santini Vacumatic

The Santini Vacumatic is the most premium pen in this lineup, made entirely in Italy: the nib, the ebonite feed, and the vacuum filling mechanism are all produced in-house. The deep purple translucent finish looks nearly black at a distance and reveals its richness up close, with faceted detailing that reads as very classic.

This broad nib is genuinely broad and remarkably wet, fed by a large-capacity barrel that can be emptied in days of enthusiastic writing. The writing feel is smooth but not buttery; there is a touch of feedback that reminds you a fountain pen is doing the work, without ever approaching scratchiness. One practical lesson learned the hard way: tighten the vacuum system’s opening point firmly before use, or ink will escape. At 790 euros it is an expensive pen, but the fully in-house construction and the sheer quality of the writing experience make a strong case for the price.

Gravitas Monster

The Gravitas Monster is a vacuum-filler with massive capacity and a number eight nib, but it avoids feeling obscenely large. It is genuinely comfortable across different hand sizes, with a well-shaped section and an ebonite feed. The filling system uses hard valves, a design that was clearly developed with care, and it performs as both a great filler and a great writer.

The featured finish, with a metallic cap and turning knob, is discontinued; current versions sit at a higher price point of around 390 euros, with the original finish having sold at 285 euros. In the broad nib it is smooth, quite wet, and if more wetness is wanted, opening the valve delivers it. It is also worth being honest about durability in real life: this one rolled off a desk, snapped in half, and was repaired with super glue, after which it worked perfectly fine. Accidents happen to any pen.

Kanwrite Mammoth

The Kanwrite Mammoth earns its name. It is a colossal ebonite pen with a number nine nib and an ebonite feed, and the body, section, and cap all share the same matching ebonite material, which gives it a lovely visual continuity. The mottled red finish in particular is striking.

The converter looks like the most awkward design ever fitted to a pen, but it works well, and the included travel adapter, essentially an eyedropper-style ink reservoir you can seal and carry, adds versatility. Writing with the medium nib, this is a pleasant, wet, non-scratchy steel-nib performer with excellent ink flow that never skips, likely thanks to that ebonite feed. The broad was sold out at the time and would be worth picking up if it returns. At 95 US dollars it sits at the lower end of this lineup, but fair warning: this pen is not for small hands or small-pen preferences.

Asvine V800

The Asvine V800 is the smallest of the five, which still means it is a big pen. It uses a number eight nib with a plastic feed, nothing fancy but perfectly effective, and it is a vacuum filler with a massive barrel that seems to never run out of ink. The clear demonstrator finish with gold trim will not suit everyone, but watching the ink slosh around is part of the charm, and other finishes exist if clear is not your thing.

The 1.1 mm stub nib is the standout option here: wet, with nice line variation, requiring no pressure at all to produce its line. The flow is so consistent that it was initially mistaken for an ebonite feed. The tapering section makes it comfortable for many hand sizes, and it can be posted if you like. At roughly 58 to 65 Canadian dollars depending on finish, it is the most affordable pen here and arguably the best pure deal.

Buying Advice

Choosing between these five comes down mostly to budget and filling preference. If money is no object and you want fully in-house Italian craftsmanship with a genuinely wet broad nib, the Santini Vacumatic is the showcase piece. The Gravitas Monster sits comfortably in the middle for anyone wanting huge capacity and a number eight nib in a manageable size.

On the value side, the Jinhao 930 delivers a piston-filling, number nine nib experience for pocket change, the Kanwrite Mammoth offers full ebonite construction at a modest price, and the Asvine V800 combines vacuum filling with a fun stub nib for the least money of the lot. Whichever way you lean, know what you are getting into: every pen here is big, so if large pens are not your thing, look for the smaller variants some of these brands offer.

Conclusion

Big nibs dominated this year, and these five pens prove that oversized writing instruments come at every price point. Whether you spend around $54 or well into the hundreds, a smooth, wet, large-nib writer is within reach, and each of these five has proven itself as more than a shelf queen.