TWSBI

TWSBI is one of the most popular fountain pen brands for good reason: every pen in their lineup uses a piston or vac-fill mechanism, giving you a massive ink capacity and the satisfaction of filling directly from a bottle. From the bestselling TWSBI Eco to the premium Diamond 580 and the classic Vac 700R, there’s a TWSBI for every writer and every budget.
Blesket Canada is an authorized TWSBI dealer. Every pen ships from our Brampton, Ontario warehouse with full manufacturer warranty. Free shipping across Ontario and Quebec on orders over $55, and free to all other Canadian provinces on orders over $99.

Out of stock

TWSBI ECO Fountain Pen – Bahama Yellow

€33,95

Out of stock

TWSBI ECO Fountain Pen – Black Marble with Bronze Trim

€53,95

Out of stock

TWSBI Obsidian Fountain Pen Limited Edition

€107,95

TWSBI Eco : The Best Beginner Piston-Fill Fountain Pen

The TWSBI Eco is the pen that got thousands of people into fountain pens, and it’s easy to see why. It offers a genuine piston-fill mechanism, a large ink capacity of 1.76ml, and a clear demonstrator body that lets you see your ink swirl inside. It’s lightweight, well-balanced, and writes smoothly out of the box.

The Eco is available in a rotating selection of colours, including clear, black, white, and seasonal limited editions like Matcha and Jade. Whether you’re buying your first fountain pen or your twentieth, the Eco is a pen you’ll keep reaching for. It’s the most recommended beginner piston-fill pen at our Brampton store for a reason.

TWSBI Diamond 580 : The Step Up

The TWSBI Diamond 580 takes everything that makes the Eco great and refines it. The body is slightly thicker and more substantial, with a faceted barrel that catches the light beautifully. The piston mechanism is smoother, the cap threads are more precise, and the overall build quality feels a step above. Ink capacity is even larger at 2.0ml.

The 580 is available in several finishes: the standard clear resin, the popular 580 ALR (aluminium grip with knurling for extra grip), and various colour editions. If you’ve tried the Eco and want something that feels more premium without jumping to a $150+ pen, the Diamond 580 is the natural next step.

TWSBI Diamond 580 AL & ALR : Premium Feel

The 580 AL features an aluminium barrel that adds a satisfying weight and premium feel to the pen. The ALR variant adds a knurled aluminium grip section, which provides extra control for writers who prefer a more textured hold. Both versions retain the piston-fill mechanism and large ink capacity of the standard 580.

TWSBI Classic & TWSBI Go

The TWSBI Classic features a more traditional fountain pen design with a round barrel, offering the same reliable piston-fill mechanism in a vintage-inspired silhouette. It’s a great choice for writers who prefer classic aesthetics over the modern demonstrator look.

The TWSBI Go is TWSBI’s most affordable pen, using a unique spring-loaded piston fill system that’s quick and fun to use. At its price point, it’s an excellent entry-level fountain pen or a worry-free daily carry.

Which TWSBI Should You Buy?

Here’s a quick guide to help you choose:

Choose the TWSBI Go if: You want the most affordable way to try a TWSBI. Great as a first fountain pen or a beater pen for travel.

Choose the TWSBI Eco if: You want the best value piston-fill fountain pen. The most popular choice for beginners and experienced writers alike.

Choose the TWSBI Diamond 580 if: You want a step up in build quality and feel. Larger ink capacity, smoother mechanism, more substantial in the hand.

Choose the TWSBI 580 AL/ALR if: You want premium materials with a weighted, aluminium body. The ALR adds a knurled grip for extra control.

Choose the TWSBI Classic if: You prefer a traditional fountain pen look over the modern demonstrator style.

TWSBI Nib Options

All TWSBI fountain pens are available with JoWo #5 or #6 steel nibs (depending on the model) in Extra Fine, Fine, Medium, Broad, and Stub 1.1mm. For everyday writing, most customers choose Fine or Medium. Extra Fine is popular for small handwriting, and the 1.1mm Stub nib produces beautiful line variation for journaling and calligraphy practice. TWSBI nibs are smooth, reliable, and write well right out of the box.

Why Buy TWSBI from Blesket Canada?

As an authorized TWSBI dealer, every pen you purchase from Blesket comes with the full manufacturer warranty. If you need replacement parts, a new nib unit, piston assembly, or O-rings, we carry those too. We also stock a wide range of fountain pen inks to pair with your TWSBI. Visit our Brampton store to try any TWSBI pen before you buy, or shop online with confidence knowing your pen is genuine, warrantied, and ships quickly from Ontario.

Fountain Pen Inks

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Organizer & Planner

Frequently Asked Questions (FAQs) – TWSBI

What is the difference between the TWSBI Eco and the Diamond 580?

The Eco is lighter, more affordable, and slightly slimmer. The Diamond 580 has a thicker barrel, larger ink capacity (2.0ml vs 1.76ml), a smoother piston mechanism, and feels more substantial in the hand. Both use the same steel nibs and are excellent pens — the 580 is the upgrade for writers who want a more premium feel.

Is the TWSBI Eco good for beginners?

Yes, the TWSBI Eco is one of the most recommended beginner fountain pens in the world. Its piston-fill mechanism is easy to use, the ink capacity is generous (so you’re not constantly refilling), and it writes smoothly out of the box.

What nib size should I choose for my TWSBI?

For most everyday writing, Fine or Medium works best. Fine is ideal for small handwriting or if you write on standard office paper. Medium gives a slightly thicker line with more ink flow, which many people find more enjoyable. The 1.1mm Stub nib is great for adding line variation to your writing but is best paired with fountain pen-friendly paper.

What ink should I use with my TWSBI?

TWSBI pens work with any standard fountain pen ink. For everyday use, we recommend Pilot Iroshizuku, Diamine, or Waterman. Avoid india ink, calligraphy ink, or any ink labelled “for dip pens only”, these can clog the piston mechanism. Shimmer inks are fine in a TWSBI with a medium or broad nib, but flush the pen regularly.

Does TWSBI offer replacement parts?

Yes. One of TWSBI’s biggest strengths is their excellent parts support. We carry replacement nib units, piston assemblies, O-ring kits, and barrel sections for most TWSBI models. If something breaks, you can often fix it yourself for a few dollars rather than replacing the entire pen.

Do you ship TWSBI pens across Canada?

Yes. We ship all TWSBI pens from our warehouse in Brampton, Ontario. Orders over $55 ship free within Ontario and Quebec, and orders over $99 ship free to all other Canadian provinces. Every order includes tracking and is carefully packaged to arrive safely.