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 (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) - Stub 1.1
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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) - Stub 1.1

$95.00

TWSBI

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TWSBI ECO fountain pen in Indigo Blue with bronze trim, featuring a clear barrel and visible piston mechanism. Includes one capped and one uncapped pen, fine nib.
TWSBI
ECO (Indigo Blue / Bronze) - Stub 1.1
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$95.00
X
TWSBI ECO fountain pen in Indigo Blue with bronze trim, featuring a clear barrel and visible piston mechanism. Includes one capped and one uncapped pen, fine nib.

ECO (Indigo Blue / Bronze) - Stub 1.1

$95.00

TWSBI

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TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, stub 1.1mm steel nib, and orange accents.
TWSBI
ECO-T (Saffron) - Stub 1.1mm
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$59.99
X
TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, stub 1.1mm steel nib, and orange accents.
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ECO-T (Saffron) - Stub 1.1mm

$59.99

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TWSBI Diamond 580 ALR Navy Blue Fine fountain pen, transparent body with blue anodized trim, uncapped showing stainless-steel nib and piston filling mechanism, ideal for fountain pen enthusiasts.
TWSBI
Diamond 580 ALR (Navy Blue) - Fine
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$120.00
X
TWSBI Diamond 580 ALR Navy Blue Fine fountain pen, transparent body with blue anodized trim, uncapped showing stainless-steel nib and piston filling mechanism, ideal for fountain pen enthusiasts.

Diamond 580 ALR (Navy Blue) - Fine

$120.00

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

Diamond 580 ALR (Prussian Blue) - Extra Fine

$120.00

TWSBI

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

ECO (White/ Rose Gold) - Broad

$95.00

TWSBI

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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
X
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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ECO-T (Yellow Green) - Fine fountain pen with clear barrel showing piston mechanism; cap in bright lime/yellow with chrome clip and TWSBI branding.
TWSBI
ECO-T (Yellow Green) - Fine
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$59.99
X
ECO-T (Yellow Green) - Fine fountain pen with clear barrel showing piston mechanism; cap in bright lime/yellow with chrome clip and TWSBI branding.
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ECO-T (Yellow Green) - Fine

$59.99

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TWSBI ECO (White) - Broad: A clear demonstrator fountain pen, featuring a silver-trim, piston-fill mechanism, with cap on and off, revealing the steel nib and ink reservoir.
TWSBI
ECO (White) - Broad
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$59.99
X
TWSBI ECO (White) - Broad: A clear demonstrator fountain pen, featuring a silver-trim, piston-fill mechanism, with cap on and off, revealing the steel nib and ink reservoir.

ECO (White) - Broad

$59.99

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new TWSBI ECO fountain pen in Serpentine colourway with copper accents, displayed on a natural wooden surface
TWSBI
ECO (Serpentine / Bronze) - Medium
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$105.00
X
TWSBI ECO fountain pen in Serpentine colourway with copper accents, displayed on a natural wooden surface
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ECO (Serpentine / Bronze) - Medium

$105.00

TWSBI

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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) - Medium
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$95.00
X
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) - Medium

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

$95.00

TWSBI

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

$59.99

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

ECO (Cerulean) - Fine

$59.99

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

ECO (Glow) - Medium

$59.99

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TWSBI SWIPE (Smoke) - Medium Fountain Pen
TWSBI
SWIPE (Smoke) - Medium
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$43.50
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TWSBI SWIPE (Smoke) - Medium Fountain Pen
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SWIPE (Smoke) - Medium

$43.50

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

$43.50

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Diamond 580 ALR (Prussian Blue) - Stub 1.1 fountain pen with transparent barrel and cap, blue metal trim, steel nib, and piston-filling mechanism.
TWSBI
Diamond 580 ALR (Prussian Blue) - Stub 1.1
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$120.00
X
Diamond 580 ALR (Prussian Blue) - Stub 1.1 fountain pen with transparent barrel and cap, blue metal trim, steel nib, and piston-filling mechanism.

Diamond 580 ALR (Prussian Blue) - Stub 1.1

$120.00

TWSBI

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ECO-T (Clear) - Stub 1.1mm fountain pen showcasing a transparent barrel with visible piston filling mechanism and pronounced grip for enhanced writing technique.
TWSBI
ECO-T (Clear) - Stub 1.1mm
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$59.99
X
ECO-T (Clear) - Stub 1.1mm fountain pen showcasing a transparent barrel with visible piston filling mechanism and pronounced grip for enhanced writing technique.
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ECO-T (Clear) - Stub 1.1mm

$59.99

TWSBI

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TWSBI ECO (Transparent Blue) - Broad fountain pen with clear barrel, translucent blue cap and tail, featuring a piston-fill mechanism for visible ink movement.
TWSBI
ECO (Transparent Blue) - Broad
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$59.99
X
TWSBI ECO (Transparent Blue) - Broad fountain pen with clear barrel, translucent blue cap and tail, featuring a piston-fill mechanism for visible ink movement.
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ECO (Transparent Blue) - Broad

$59.99

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Diamond 580 ALR (Nickel Gray) - Broad fountain pen, showing clear body with visible piston mechanism, metal nib, and matte aluminum grip with cap on and off.
TWSBI
Diamond 580 ALR (Nickel Gray) - Broad
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$120.00
X
Diamond 580 ALR (Nickel Gray) - Broad fountain pen, showing clear body with visible piston mechanism, metal nib, and matte aluminum grip with cap on and off.
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Diamond 580 ALR (Nickel Gray) - Broad

$120.00

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

$120.00

TWSBI

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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
X
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

TWSBI

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Diamond Mini (Clear) - Stub 1.1 fountain pens, one capped and one uncapped, showcasing internal piston-fill mechanisms and steel nibs, ideal for on-the-go use.
TWSBI
Diamond Mini (Clear) - Stub 1.1
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$98.00
X
Diamond Mini (Clear) - Stub 1.1 fountain pens, one capped and one uncapped, showcasing internal piston-fill mechanisms and steel nibs, ideal for on-the-go use.
/ 1 / 2

Diamond Mini (Clear) - Stub 1.1

$98.00

TWSBI

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ECO-T (Blue) - Fine: Clear-barrel, piston-filling fountain pen with a bright blue cap and end knob, featuring a stainless nib and TWSBI logo on the cap band.
TWSBI
ECO-T (Blue) - Fine
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$59.99
X
ECO-T (Blue) - Fine: Clear-barrel, piston-filling fountain pen with a bright blue cap and end knob, featuring a stainless nib and TWSBI logo on the cap band.
/ 1 / 2

ECO-T (Blue) - Fine

$59.99

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new ECO (Carrara / Onyx) - Stub 1.1
TWSBI
ECO (Carrara / Onyx) - Stub 1.1
-
$105.00
X
ECO (Carrara / Onyx) - Stub 1.1
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ECO (Carrara / Onyx) - Stub 1.1

$105.00

TWSBI

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new TWSBI ECO fountain pen in Serpentine colourway with copper accents, displayed on a natural wooden surface
TWSBI
ECO (Serpentine / Bronze) - Extra Fine
-
$105.00
X
TWSBI ECO fountain pen in Serpentine colourway with copper accents, displayed on a natural wooden surface
/ 1 / 2 / 3 / 4 / 5

ECO (Serpentine / Bronze) - Extra Fine

$105.00

TWSBI

More Details →
new TWSBI ECO fountain pen in Matcha colourway with transparent body and green accents
TWSBI
ECO (Matcha) - Medium
-
$59.99
X
TWSBI ECO fountain pen in Matcha colourway with transparent body and green accents
/ 1 / 2 / 3 / 4

ECO (Matcha) - Medium

$59.99

TWSBI

More Details →
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
-
$95.00
X
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.
/ 1 / 2 / 3

ECO (Espresso / Bronze) - Extra Fine

$95.00

TWSBI

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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
-
$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.
/ 1 / 2 / 3

ECO (Irish Green/ Onyx) - Extra Fine

$95.00

TWSBI

More Details →
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) - Broad
-
$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.
/ 1 / 2 / 3

ECO (Irish Green/ Onyx) - Broad

$95.00

TWSBI

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TWSBI ECO fountain pen in Caffe/Bronze, featuring a Stub 1.1 nib, clear barrel, and piston fill mechanism. One pen is capped, the other uncapped, revealing the nib.
TWSBI
ECO (Caffe / Bronze) - Stub 1.1
-
$95.00
X
TWSBI ECO fountain pen in Caffe/Bronze, featuring a Stub 1.1 nib, clear barrel, and piston fill mechanism. One pen is capped, the other uncapped, revealing the nib.
/ 1 / 2 / 3 / 4

ECO (Caffe / Bronze) - Stub 1.1

$95.00

TWSBI

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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
-
$59.99
X
TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, extra fine steel nib, and orange accents.
/ 1 / 2

ECO-T (Saffron) - Extra Fine

$59.99

TWSBI

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TWSBI ECO-T Pen and Ink Set (Royal Jade/Rose Gold) with Fine nib, featuring a clear barrel and piston converter, includes a 15ml Midnight Blue fountain pen ink bottle.
TWSBI
ECO-T Pen and Ink Set (Royal Jade / Rose Gold) - Fine
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$129.00
X
TWSBI ECO-T Pen and Ink Set (Royal Jade/Rose Gold) with Fine nib, featuring a clear barrel and piston converter, includes a 15ml Midnight Blue fountain pen ink bottle.
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ECO-T Pen and Ink Set (Royal Jade / Rose Gold) - Fine

$129.00

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TWSBI ECO-T Pen and Ink Set (Royal Jade/Rose Gold) with Medium nib, featuring a clear barrel and piston converter, includes a 15ml Midnight Blue fountain pen ink bottle.
TWSBI
ECO-T Pen and Ink Set (Royal Jade / Rose Gold) - Medium
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$129.00
X
TWSBI ECO-T Pen and Ink Set (Royal Jade/Rose Gold) with Medium nib, featuring a clear barrel and piston converter, includes a 15ml Midnight Blue fountain pen ink bottle.
/ 1 / 2 / 3 / 4

ECO-T Pen and Ink Set (Royal Jade / Rose Gold) - Medium

$129.00

TWSBI

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TWSBI ECO (Glow Purple) - 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) - Fine
-
$59.99
X
TWSBI ECO (Glow Purple) - Fine fountain pen with clear barrel, featuring a piston-filling mechanism; one pen capped, the other uncapped showing the steel nib.
/ 1 / 2

ECO (Glow Purple) - Fine

$59.99

TWSBI

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new ECO (Carrara / Onyx) - Medium Sold Out
TWSBI
ECO (Carrara / Onyx) - Medium
-
$105.00
X
ECO (Carrara / Onyx) - Medium
/ 1 / 2 / 3 / 4
Sold Out

ECO (Carrara / Onyx) - Medium

$105.00

TWSBI

This product is sold out

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new TWSBI ECO fountain pen in Matcha colourway with transparent body and green accents Sold Out
TWSBI
ECO (Matcha) - Fine
-
$59.99
X
TWSBI ECO fountain pen in Matcha colourway with transparent body and green accents
/ 1 / 2 / 3 / 4
Sold Out

ECO (Matcha) - Fine

$59.99

TWSBI

This product is sold out

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