TWSBI

TWSBI fountain pens are known for precision engineering, smooth nibs, and generous ink capacity. Explore the full lineup, including the entry-level Eco and Eco-T, aluminium-bodied 580AL and 580ALR, piston-filled Vac700R, beginner-friendly Go, compact Swipe, and Gemini. TWSBI also offers a growing range of bottled inks, perfect for pairing with any of their refillable pens. Whether you're writing daily or building your collection, there's a TWSBI for every writer.

Looking for ink? Browse our full range of TWSBI bottled inks and samples.

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ECO (Clear) - Extra Fine fountain pen with a transparent barrel, visible piston-filling mechanism, stainless-steel nib, and metal clip, showcasing its build and functionality.
TWSBI
ECO (Clear) - Extra Fine
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$59.99
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ECO (Clear) - Extra Fine fountain pen with a transparent barrel, visible piston-filling mechanism, stainless-steel nib, and metal clip, showcasing its build and functionality.

ECO (Clear) - Extra Fine

$59.99

TWSBI

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TWSBI ECO (White/ Rose Gold) - Extra Fine Fountain Pen
TWSBI
ECO (White/ Rose Gold) - Extra Fine
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$95.00
X
TWSBI ECO (White/ Rose Gold) - Extra Fine Fountain Pen

ECO (White/ Rose Gold) - Extra Fine

$95.00

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TWSBI ECO (Black) - Extra Fine fountain pen, clear barrel revealing ink reservoir, with black cap and end, shown capped and uncapped, featuring piston fill mechanism.
TWSBI
ECO (Black) - Extra Fine
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$59.99
X
TWSBI ECO (Black) - Extra Fine fountain pen, clear barrel revealing ink reservoir, with black cap and end, shown capped and uncapped, featuring piston fill mechanism.

ECO (Black) - Extra Fine

$59.99

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TWSBI ECO fountain pen in Creme/Rose Gold, featuring a clear acrylic body, Extra Fine steel nib, and piston filling mechanism, showcasing elegant rose-gold-tone trim.
TWSBI
ECO (Creme / Rose Gold) - Extra Fine
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$95.00
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TWSBI ECO fountain pen in Creme/Rose Gold, featuring a clear acrylic body, Extra Fine steel nib, and piston filling mechanism, showcasing elegant rose-gold-tone trim.
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ECO (Creme / Rose Gold) - Extra Fine

$95.00

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TWSBI GO (Smoke) - Extra Fine fountain pen, featuring a transparent body with a visible piston-fill ink reservoir; one pen capped, the other uncapped showing the nib.
TWSBI
GO (Smoke) - Extra Fine
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$35.00
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TWSBI GO (Smoke) - Extra Fine fountain pen, featuring a transparent body with a visible piston-fill ink reservoir; one pen capped, the other uncapped showing the nib.
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GO (Smoke) - Extra Fine

$35.00

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TWSBI ECO (White) - Extra Fine, clear-barrel fountain pen with white trim, silver clip. Features piston-filling mechanism, shown capped and uncapped.
TWSBI
ECO (White) - Extra Fine
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$59.99
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TWSBI ECO (White) - Extra Fine, clear-barrel fountain pen with white trim, silver clip. Features piston-filling mechanism, shown capped and uncapped.

ECO (White) - Extra Fine

$59.99

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TWSBI ECO (Transparent Purple) - Extra Fine Fountain Pen
TWSBI
ECO (Transparent Purple) - Extra Fine
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$59.99
X
TWSBI ECO (Transparent Purple) - Extra Fine Fountain Pen

ECO (Transparent Purple) - Extra Fine

$59.99

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Diamond 580 ALR (Nickel Gray) - Extra Fine fountain pen featuring a transparent body, visible piston-filling mechanism, and matte aluminum detailing for elegant writing.
TWSBI
Diamond 580 ALR (Nickel Gray) - Extra Fine
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$120.00
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Diamond 580 ALR (Nickel Gray) - Extra Fine fountain pen featuring a transparent body, visible piston-filling mechanism, and matte aluminum detailing for elegant writing.
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Diamond 580 ALR (Nickel Gray) - Extra Fine

$120.00

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TWSBI ECO fountain pen in Indigo Blue/Bronze, Extra Fine nib, showcases a clear barrel with piston-filling mechanism. One pen is capped, highlighting its sleek design.
TWSBI
ECO (Indigo Blue / Bronze) - Extra Fine
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$95.00
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TWSBI ECO fountain pen in Indigo Blue/Bronze, Extra Fine nib, showcases a clear barrel with piston-filling mechanism. One pen is capped, highlighting its sleek design.

ECO (Indigo Blue / Bronze) - Extra Fine

$95.00

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TWSBI Piston Converter Accessories
TWSBI
Piston Converter
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$7.00
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TWSBI Piston Converter Accessories

Piston Converter

$7.00

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TWSBI ECO-T (Mint Blue) - Extra Fine Fountain Pen
TWSBI
ECO-T (Mint Blue) - Extra Fine
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$59.99
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TWSBI ECO-T (Mint Blue) - Extra Fine Fountain Pen

ECO-T (Mint Blue) - Extra Fine

$59.99

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GO (Clear) - Extra Fine fountain pen with visible nib section, transparent ink converter, and spring piston mechanism, shown with snap-on cap beside it.
TWSBI
GO (Clear) - Extra Fine
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$35.00
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GO (Clear) - Extra Fine fountain pen with visible nib section, transparent ink converter, and spring piston mechanism, shown with snap-on cap beside it.
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GO (Clear) - Extra Fine

$35.00

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TWSBI GO (Sapphire) - Extra Fine pen with clear body, translucent cap, blue barrel, steel nib, and visible piston filling mechanism, shown capped and uncapped.
TWSBI
GO (Sapphire) - Extra Fine
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$35.00
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TWSBI GO (Sapphire) - Extra Fine pen with clear body, translucent cap, blue barrel, steel nib, and visible piston filling mechanism, shown capped and uncapped.

GO (Sapphire) - Extra Fine

$35.00

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TWSBI Diamond Mini Rose Gold II (White) - Extra Fine Fountain Pen
TWSBI
Diamond Mini Rose Gold II (White) - Extra Fine
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$135.00
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TWSBI Diamond Mini Rose Gold II (White) - Extra Fine Fountain Pen

Diamond Mini Rose Gold II (White) - Extra Fine

$135.00

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TWSBI Diamond 580 ALR (Prussian Blue) - Extra Fine Fountain Pen
TWSBI
Diamond 580 ALR (Prussian Blue) - Extra Fine
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$120.00
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TWSBI Diamond 580 ALR (Prussian Blue) - Extra Fine Fountain Pen

Diamond 580 ALR (Prussian Blue) - Extra Fine

$120.00

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ECO-T (Clear) - Extra Fine fountain pen with transparent barrel, visible nib, piston ink-filling mechanism, and clear cap with metal clip. Designed for improved grip technique.
TWSBI
ECO-T (Clear) - Extra Fine
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$59.99
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ECO-T (Clear) - Extra Fine fountain pen with transparent barrel, visible nib, piston ink-filling mechanism, and clear cap with metal clip. Designed for improved grip technique.
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ECO-T (Clear) - Extra Fine

$59.99

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TWSBI ECO fountain pen in Caffe/Bronze, featuring a extra fine nib, clear barrel, and piston fill mechanism. One pen is capped, the other uncapped, revealing the nib.
TWSBI
ECO (Caffe / Bronze) - Extra Fine
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$95.00
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TWSBI ECO fountain pen in Caffe/Bronze, featuring a extra fine nib, clear barrel, and piston fill mechanism. One pen is capped, the other uncapped, revealing the nib.
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ECO (Caffe / Bronze) - Extra Fine

$95.00

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TWSBI SWIPE (Prussian Blue) - Extra Fine Fountain Pen
TWSBI
SWIPE (Prussian Blue) - Extra Fine
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$43.50
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TWSBI SWIPE (Prussian Blue) - Extra Fine Fountain Pen
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SWIPE (Prussian Blue) - Extra Fine

$43.50

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Diamond 580AL (Silver) - Extra Fine fountain pen with clear body, visible piston-filling mechanism, metal nib, and cap featuring a metal clip and red emblem.
TWSBI
Diamond 580AL (Silver) - Extra Fine
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$120.00
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Diamond 580AL (Silver) - Extra Fine fountain pen with clear body, visible piston-filling mechanism, metal nib, and cap featuring a metal clip and red emblem.
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Diamond 580AL (Silver) - Extra Fine

$120.00

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new TWSBI ECO (Espresso/Bronze) - Extra Fine fountain pens showing clear barrels, one uncapped to display the nib and piston-filling mechanism, with brown caps and gold trim.
TWSBI
ECO (Espresso / Bronze) - Extra Fine
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$95.00
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TWSBI ECO (Espresso/Bronze) - Extra Fine fountain pens showing clear barrels, one uncapped to display the nib and piston-filling mechanism, with brown caps and gold trim.
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ECO (Espresso / Bronze) - Extra Fine

$95.00

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ECO (Irish Green/Onyx) - Extra Fine fountain pen with a clear barrel, green trim, capped and uncapped, revealing the black steel nib and piston fill mechanism.
TWSBI
ECO (Irish Green/ Onyx) - Extra Fine
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$95.00
X
ECO (Irish Green/Onyx) - Extra Fine fountain pen with a clear barrel, green trim, capped and uncapped, revealing the black steel nib and piston fill mechanism.
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ECO (Irish Green/ Onyx) - Extra Fine

$95.00

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TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, extra fine steel nib, and orange accents.
TWSBI
ECO-T (Saffron) - Extra Fine
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$59.99
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TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, extra fine steel nib, and orange accents.
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ECO-T (Saffron) - Extra Fine

$59.99

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TWSBI Spring Loaded Converter Accessories
TWSBI
Spring Loaded Converter
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$7.00
X
TWSBI Spring Loaded Converter Accessories

Spring Loaded Converter

$7.00

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TWSBI SWIPE (Smoke) - Extra Fine Fountain Pen
TWSBI
SWIPE (Smoke) - Extra Fine
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$43.50
X
TWSBI SWIPE (Smoke) - Extra Fine Fountain Pen
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SWIPE (Smoke) - Extra Fine

$43.50

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TWSBI ECO (Transparent Blue) - Extra Fine fountain pen with a clear barrel, visible ink reservoir, and blue screw-on cap beside it, showcasing a piston-filling mechanism.
TWSBI
ECO (Transparent Blue) - Extra Fine
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$59.99
X
TWSBI ECO (Transparent Blue) - Extra Fine fountain pen with a clear barrel, visible ink reservoir, and blue screw-on cap beside it, showcasing a piston-filling mechanism.
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ECO (Transparent Blue) - Extra Fine

$59.99

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Diamond Mini (Clear) - Extra Fine fountain pen, with a transparent body showing the piston-filling mechanism. One pen is capped, the other reveals the metal nib.
TWSBI
Diamond Mini (Clear) - Extra Fine
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$92.00
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Diamond Mini (Clear) - Extra Fine fountain pen, with a transparent body showing the piston-filling mechanism. One pen is capped, the other reveals the metal nib.
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Diamond Mini (Clear) - Extra Fine

$92.00

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new Diamond 580 ALR (Affogato with Onyx) - Stub 1.1 fountain pen featuring a clear barrel, piston mechanism, and orange metal accents, showcasing its elegant design and functionality.
TWSBI
Diamond 580 ALR (Affogato with Onyx) - Extra Fine
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$155.00
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Diamond 580 ALR (Affogato with Onyx) - Stub 1.1 fountain pen featuring a clear barrel, piston mechanism, and orange metal accents, showcasing its elegant design and functionality.
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Diamond 580 ALR (Affogato with Onyx) - Extra Fine

$155.00

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new Two TWSBI ECO (Slate Blue/Onyx) - Extra Fine fountain pens, one capped, one uncapped, showcasing clear barrels with visible piston-filling mechanisms and blue end caps.
TWSBI
ECO (Slate Blue / Onyx) - Extra Fine
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$95.00
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Two TWSBI ECO (Slate Blue/Onyx) - Extra Fine fountain pens, one capped, one uncapped, showcasing clear barrels with visible piston-filling mechanisms and blue end caps.
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ECO (Slate Blue / Onyx) - Extra Fine

$95.00

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TWSBI Diamond 580ALR (Black) - extra fine fountain pen, transparent body with piston mechanism, steel nib, and matte aluminium grip, showcasing elegant design and functionality.
TWSBI
Diamond 580 ALR (Black) - Extra Fine
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$120.00
X
TWSBI Diamond 580ALR (Black) - extra fine fountain pen, transparent body with piston mechanism, steel nib, and matte aluminium grip, showcasing elegant design and functionality.
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Diamond 580 ALR (Black) - Extra Fine

$120.00

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TWSBI ECO (Cerulean) - Extra Fine fountain pen with clear barrel, turquoise cap, and stainless-steel nib, featuring a piston-fill mechanism for high ink capacity.
TWSBI
ECO (Cerulean) - Extra Fine
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$59.99
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TWSBI ECO (Cerulean) - Extra Fine fountain pen with clear barrel, turquoise cap, and stainless-steel nib, featuring a piston-fill mechanism for high ink capacity.

ECO (Cerulean) - Extra Fine

$59.99

TWSBI

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TWSBI Diamond 580 ALR (Navy Blue) - Extra Fine fountain pen, transparent barrel, blue accents, stainless steel nib, piston-filling mechanism, one pen capped, another uncapped, showcasing grip and nib.
TWSBI
Diamond 580 ALR (Navy Blue) - Extra Fine
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$120.00
X
TWSBI Diamond 580 ALR (Navy Blue) - Extra Fine fountain pen, transparent barrel, blue accents, stainless steel nib, piston-filling mechanism, one pen capped, another uncapped, showcasing grip and nib.

Diamond 580 ALR (Navy Blue) - Extra Fine

$120.00

TWSBI

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new TWSBI ECO fountain pen in Matcha colourway with transparent body and green accents
TWSBI
ECO (Matcha) - Extra Fine
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$59.99
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TWSBI ECO fountain pen in Matcha colourway with transparent body and green accents
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ECO (Matcha) - Extra Fine

$59.99

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TWSBI ECO (Sky Blue) - Extra Fine fountain pen, capped and uncapped, with clear barrel showcasing piston-fill mechanism, sky-blue cap, and stainless steel nib.
TWSBI
ECO (Sky Blue) - Extra Fine
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$59.99
X
TWSBI ECO (Sky Blue) - Extra Fine fountain pen, capped and uncapped, with clear barrel showcasing piston-fill mechanism, sky-blue cap, and stainless steel nib.
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ECO (Sky Blue) - Extra Fine

$59.99

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TWSBI ECO (Amazonite) - Extra Fine fountain pens, featuring clear barrels and mint-green marbling, showcasing a piston-filling mechanism and stainless-steel nib.
TWSBI
ECO (Amazonite) - Extra Fine
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$68.00
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TWSBI ECO (Amazonite) - Extra Fine fountain pens, featuring clear barrels and mint-green marbling, showcasing a piston-filling mechanism and stainless-steel nib.
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ECO (Amazonite) - Extra Fine

$68.00

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TWSBI Kai (LE) - extra fine fountain pen with blue-black marbled resin, rose-gold trim, and gold nib. Includes ink window and screw-on cap.
TWSBI
TWSBI Kai (LE) - Extra Fine
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$235.00
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TWSBI Kai (LE) - extra fine fountain pen with blue-black marbled resin, rose-gold trim, and gold nib. Includes ink window and screw-on cap.
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TWSBI Kai (LE) - Extra Fine

$235.00

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TWSBI Diamond 580 ALR (Sunset Yellow) - Extra Fine fountain pen, showcasing a clear body with metallic trim, featuring a piston-filling mechanism and detachable parts for easy maintenance.
TWSBI
Diamond 580 ALR (Sunset Yellow) - Extra Fine
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$120.00
X
TWSBI Diamond 580 ALR (Sunset Yellow) - Extra Fine fountain pen, showcasing a clear body with metallic trim, featuring a piston-filling mechanism and detachable parts for easy maintenance.

Diamond 580 ALR (Sunset Yellow) - Extra Fine

$120.00

TWSBI

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TWSBI ECO (Heat) - Extra Fine fountain pens, featuring clear barrels with bright orange caps, one capped and one uncapped, highlighting the metal nib and piston mechanism.
TWSBI
ECO (Heat) - Extra Fine
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$59.99
X
TWSBI ECO (Heat) - Extra Fine fountain pens, featuring clear barrels with bright orange caps, one capped and one uncapped, highlighting the metal nib and piston mechanism.

ECO (Heat) - Extra Fine

$59.99

TWSBI

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TWSBI ECO (Glow Purple) - Extra Fine fountain pen with clear barrel, featuring a piston-filling mechanism; one pen capped, the other uncapped showing the steel nib.
TWSBI
ECO (Glow Purple) - Extra Fine
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$59.99
X
TWSBI ECO (Glow Purple) - Extra Fine fountain pen with clear barrel, featuring a piston-filling mechanism; one pen capped, the other uncapped showing the steel nib.
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ECO (Glow Purple) - Extra Fine

$59.99

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TWSBI ECO (Glow Green) - Extra Fine fountain pen, shown with clear barrel, uninked on left and filled with black ink on right, featuring a piston-fill mechanism.
TWSBI
ECO (Glow Green) - Extra Fine
-
$59.99
X
TWSBI ECO (Glow Green) - Extra Fine fountain pen, shown with clear barrel, uninked on left and filled with black ink on right, featuring a piston-fill mechanism.

ECO (Glow Green) - Extra Fine

$59.99

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TWSBI ECO (Smoke / Rose Gold) - Extra Fine Fountain Pen Sold Out
TWSBI
ECO (Smoke / Rose Gold) - Extra Fine
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$95.00
X
TWSBI ECO (Smoke / Rose Gold) - Extra Fine Fountain Pen
/ 1 / 2
Sold Out

ECO (Smoke / Rose Gold) - Extra Fine

$95.00

TWSBI

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