TWSBI fountain pens (top 7)

The TWSBI range runs wide and deep, and for most models there is a core colour range and then seasonal colours. These are the most popular:

1. TWSBI Eco: Our top seller, known for value, foolproof piston-filling mechanism, large 1.8mL ink capacity, transparent design and edgy stub nib option. Twsbi Eco Sketch Kits are a favourite with artists needing waterproof inks. Use with the cap posted on the end of the pen or unposted.

2. TWSBI Diamond 580: The next model up, with 1.9mL ink capacity, a larger nib, more comfortable grip and interchangeable nib units, is designed for general writing. Compatible with the Twsbi Diamond Ink Well. The 580 ALR, with aluminium details and textured (ribbed) grip, is the newest model. Use with cap unposted. 

3. TWSBI Vac700R: Loved for its larger overall size, fast vacuum-filling mechanism and 2mL ink capacity. Includes ink shut-off valve for travel. Compatible with Twsbi Vac Ink Well. Large #6 nib makes this pen compatible with many other #6 nibs.

4. TWSBI Diamond Mini: A pocket pen admired for its compact size, 1.3mL piston-filling mechanism, and portability. Compatible with the Twsbi Diamond Ink Well. Same nib as the Eco. Use with the cap posted.

5. TWSBI Vac Mini: Another pocket pen, but this time with fast vaccum-filling and 2mL capacity. Includes ink shut-off valve for travel. Compatible with Twsbi Vac Ink Well. Same nib as the Eco. Use with the cap posted.

6. TWSBI Classic: A timeless design, with an opaque body, ink window and 1.5mL piston-filling mechanism. Compatible with the Twsbi Diamond Ink Well. Same nib as Eco. Use with cap posted or unposted.

7. TWSBI Swipe: Entry level cartridge/converter style fountain pen, designed for students. Compatible with universal cartridges and converters. Same nib as Eco. Supplied with spring converter which holds 1.5mL.

We stock wide in Twsbi including spare parts, nibs and caps. The Twsbi Eco nib is friction fit and is changed by sliding the original nib and feed out and the new pair in. The Twsbi Diamond and Vac nibs are a screw in nib unit and very easy to change, even if the pen is inked. 

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