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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TWSBI GO (Clear) - Broad Fountain Pen
TWSBI
GO (Clear) - Broad
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$35.00
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TWSBI GO (Clear) - Broad Fountain Pen
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GO (Clear) - Broad

$35.00

TWSBI

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Transparent TWSBI ECO (Black) - Broad fountain pen, uncapped to show piston mechanism, with black trim and silver nib, alongside a capped version for comparison.
TWSBI
ECO (Black) - Broad
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$59.99
X
Transparent TWSBI ECO (Black) - Broad fountain pen, uncapped to show piston mechanism, with black trim and silver nib, alongside a capped version for comparison.

ECO (Black) - Broad

$59.99

TWSBI

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TWSBI Diamond Mini Rose Gold II (White) - Stub 1.1 Fountain Pen
TWSBI
Diamond Mini Rose Gold II (White) - Stub 1.1
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$139.00
X
TWSBI Diamond Mini Rose Gold II (White) - Stub 1.1 Fountain Pen

Diamond Mini Rose Gold II (White) - Stub 1.1

$139.00

TWSBI

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TWSBI VAC 700R (IRIS) - Extra Fine Fountain Pen
TWSBI
VAC 700R (IRIS) - Extra Fine
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$150.00
X
TWSBI VAC 700R (IRIS) - Extra Fine Fountain Pen

VAC 700R (IRIS) - Extra Fine

$150.00

TWSBI

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TWSBI VAC 700R (IRIS) - Stub 1.1 Fountain Pen
TWSBI
VAC 700R (IRIS) - Stub 1.1
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$159.00
X
TWSBI VAC 700R (IRIS) - Stub 1.1 Fountain Pen

VAC 700R (IRIS) - Stub 1.1

$159.00

TWSBI

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TWSBI TWSBI Blue Black - 70ml Bottled Ink
TWSBI
TWSBI Blue Black - 70ml
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$32.00
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TWSBI TWSBI Blue Black - 70ml Bottled Ink
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TWSBI Blue Black - 70ml

$32.00

TWSBI

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TWSBI TWSBI Red - 2ml Ink Sample
TWSBI
TWSBI Red - 2ml
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$2.00
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TWSBI TWSBI Red - 2ml Ink Sample
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TWSBI Red - 2ml

$2.00

TWSBI

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Diamond 580 Nib Set - Stub 1.1, featuring a TWSBI-marked steel nib with feed and ink-converter, compatible with the Diamond 580 fountain pen range.
TWSBI
Diamond 580 Nib Set - Stub 1.1
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$39.50
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Diamond 580 Nib Set - Stub 1.1, featuring a TWSBI-marked steel nib with feed and ink-converter, compatible with the Diamond 580 fountain pen range.

Diamond 580 Nib Set - Stub 1.1

$39.50

TWSBI

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TWSBI ECO (Clear) - Broad fountain pen, disassembled, showcasing a transparent barrel with piston mechanism, metal nib section, and cap with metal clip and red gasket.
TWSBI
ECO (Clear) - Broad
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$59.99
X
TWSBI ECO (Clear) - Broad fountain pen, disassembled, showcasing a transparent barrel with piston mechanism, metal nib section, and cap with metal clip and red gasket.

ECO (Clear) - Broad

$59.99

TWSBI

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Diamond 580AL (Rose Red) - Stub 1.1 fountain pen, clear barrel, red grip, visible piston mechanism, shown capped and uncapped revealing the nib. Limited edition.
TWSBI
Diamond 580AL (Rose Red) -Stub 1.1
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$120.00
X
Diamond 580AL (Rose Red) - Stub 1.1 fountain pen, clear barrel, red grip, visible piston mechanism, shown capped and uncapped revealing the nib. Limited edition.

Diamond 580AL (Rose Red) -Stub 1.1

$120.00

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) - Fine
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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) - Fine

$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) - Broad
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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) - Broad

$95.00

TWSBI

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

Diamond Mini Rose Gold II (White) - Fine

$135.00

TWSBI

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Two transparent TWSBI GO (Sapphire) - Broad fountain pens, one capped, one uncapped showing metal nib and ink reservoir, highlighting the pen's spring piston filling mechanism.
TWSBI
GO (Sapphire) - Broad
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$35.00
X
Two transparent TWSBI GO (Sapphire) - Broad fountain pens, one capped, one uncapped showing metal nib and ink reservoir, highlighting the pen's spring piston filling mechanism.

GO (Sapphire) - Broad

$35.00

TWSBI

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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
X
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

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) - Medium
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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) - Medium

$95.00

TWSBI

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TWSBI SWIPE (Prussian Blue) - Stub 1.1mm Fountain Pen
TWSBI
SWIPE (Prussian Blue) - Stub 1.1mm
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$43.50
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TWSBI SWIPE (Prussian Blue) - Stub 1.1mm Fountain Pen
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SWIPE (Prussian Blue) - Stub 1.1mm

$43.50

TWSBI

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TWSBI Diamond 580 ALR (Prussian Blue) - Medium Fountain Pen
TWSBI
Diamond 580 ALR (Prussian Blue) - Medium
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$120.00
X
TWSBI Diamond 580 ALR (Prussian Blue) - Medium Fountain Pen

Diamond 580 ALR (Prussian Blue) - Medium

$120.00

TWSBI

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ECO-T (Clear) - Medium fountain pen with transparent barrel and cap, showcasing the internal piston-filling mechanism and a metal nib, designed for enhanced grip technique.
TWSBI
ECO-T (Clear) - Medium
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$59.99
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ECO-T (Clear) - Medium fountain pen with transparent barrel and cap, showcasing the internal piston-filling mechanism and a metal nib, designed for enhanced grip technique.
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ECO-T (Clear) - Medium

$59.99

TWSBI

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ECO-T (Clear) - Fine fountain pen with a transparent body, showcasing its piston-filling mechanism, steel nib, and pronounced grip for structured pen handling.
TWSBI
ECO-T (Clear) - Fine
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$59.99
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ECO-T (Clear) - Fine fountain pen with a transparent body, showcasing its piston-filling mechanism, steel nib, and pronounced grip for structured pen handling.
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ECO-T (Clear) - Fine

$59.99

TWSBI

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ECO (Transparent Blue) - Stub 1.1mm fountain pen featuring a clear barrel with visible piston-filling mechanism, screw-on translucent blue cap, and engraved TWSBI logo.
TWSBI
ECO (Transparent Blue) - Stub 1.1mm
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$59.99
X
ECO (Transparent Blue) - Stub 1.1mm fountain pen featuring a clear barrel with visible piston-filling mechanism, screw-on translucent blue cap, and engraved TWSBI logo.
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ECO (Transparent Blue) - Stub 1.1mm

$59.99

TWSBI

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Two TWSBI GO (Smoke) - Medium fountain pens, one capped, the other uncapped, revealing a steel nib and ink-filled spring piston mechanism.
TWSBI
GO (Smoke) - Medium
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$35.00
X
Two TWSBI GO (Smoke) - Medium fountain pens, one capped, the other uncapped, revealing a steel nib and ink-filled spring piston mechanism.
/ 1 / 2

GO (Smoke) - Medium

$35.00

TWSBI

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Diamond 580 ALR (Nickel Gray) - Stub 1.1 fountain pen, showcasing a clear body with a stainless-steel nib, capped and uncapped views highlighting its aluminum grip and piston-filler mechanism.
TWSBI
Diamond 580 ALR (Nickel Gray) - Stub 1.1
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$120.00
X
Diamond 580 ALR (Nickel Gray) - Stub 1.1 fountain pen, showcasing a clear body with a stainless-steel nib, capped and uncapped views highlighting its aluminum grip and piston-filler mechanism.
/ 1 / 2 / 3

Diamond 580 ALR (Nickel Gray) - Stub 1.1

$120.00

TWSBI

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Diamond 580 Nib Set - Stub 1.5 features a polished steel nib with decorative etching, attached to its grip, alongside an ink converter assembly.
TWSBI
Diamond 580 Nib Set - Stub 1.5
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$39.50
X
Diamond 580 Nib Set - Stub 1.5 features a polished steel nib with decorative etching, attached to its grip, alongside an ink converter assembly.

Diamond 580 Nib Set - Stub 1.5

$39.50

TWSBI

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TWSBI ECO (Glow Purple) - Medium Fountain Pen
TWSBI
ECO (Glow Purple) - Medium
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$59.99
X
TWSBI ECO (Glow Purple) - Medium Fountain Pen
/ 1 / 2

ECO (Glow Purple) - Medium

$59.99

TWSBI

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TWSBI Diamond 580 (Iris) - Medium Fountain Pen
TWSBI
Diamond 580 (Iris) - Medium
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$155.00
X
TWSBI Diamond 580 (Iris) - Medium Fountain Pen
/ 1 / 2 / 3 / 4

Diamond 580 (Iris) - Medium

$155.00

TWSBI

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

$43.50

TWSBI

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

$95.00

TWSBI

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TWSBI ECO (Smoke / Rose Gold) - Medium Fountain Pen
TWSBI
ECO (Smoke / Rose Gold) - Medium
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$95.00
X
TWSBI ECO (Smoke / Rose Gold) - Medium Fountain Pen
/ 1 / 2

ECO (Smoke / Rose Gold) - Medium

$95.00

TWSBI

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TWSBI ECO (Smoke/ Rose Gold) - Stub 1.1mm Fountain Pen
TWSBI
ECO (Smoke/ Rose Gold) - Stub 1.1mm
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$95.00
X
TWSBI ECO (Smoke/ Rose Gold) - Stub 1.1mm Fountain Pen
/ 1 / 2

ECO (Smoke/ Rose Gold) - Stub 1.1mm

$95.00

TWSBI

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TWSBI VAC 700R (IRIS) - Broad Fountain Pen
TWSBI
VAC 700R (IRIS) - Broad
-
$150.00
X
TWSBI VAC 700R (IRIS) - Broad Fountain Pen

VAC 700R (IRIS) - Broad

$150.00

TWSBI

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Two Diamond 580 (Smoke/Rose Gold) fountain pens, one capped and one uncapped, showcasing the clear barrel, rose-gold trim, and visible piston mechanism.
TWSBI
Diamond 580 (Smoke/Rose Gold) - Stub 1.1
-
$165.00
X
Two Diamond 580 (Smoke/Rose Gold) fountain pens, one capped and one uncapped, showcasing the clear barrel, rose-gold trim, and visible piston mechanism.

Diamond 580 (Smoke/Rose Gold) - Stub 1.1

$165.00

TWSBI

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

ECO (Transparent Purple) - Extra Fine

$59.99

TWSBI

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Diamond 580 Nib Set - Extra Fine: Close-up of steel nib with black feed and transparent converter, compatible with TWSBI Diamond 580 fountain pens.
TWSBI
Diamond 580 Nib Set - Extra Fine
-
$34.50
X
Diamond 580 Nib Set - Extra Fine: Close-up of steel nib with black feed and transparent converter, compatible with TWSBI Diamond 580 fountain pens.

Diamond 580 Nib Set - Extra Fine

$34.50

TWSBI

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Two TWSBI GO (Sapphire) - Fine fountain pens, one capped and one uncapped, displaying a stainless-steel nib and piston ink reservoir.
TWSBI
GO (Sapphire) - Fine
-
$35.00
X
Two TWSBI GO (Sapphire) - Fine fountain pens, one capped and one uncapped, displaying a stainless-steel nib and piston ink reservoir.

GO (Sapphire) - Fine

$35.00

TWSBI

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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
-
$120.00
X
Diamond 580 ALR (Nickel Gray) - Extra Fine fountain pen featuring a transparent body, visible piston-filling mechanism, and matte aluminum detailing for elegant writing.
/ 1 / 2 / 3

Diamond 580 ALR (Nickel Gray) - Extra Fine

$120.00

TWSBI

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Diamond 580 Nib Set - Broad, showcasing a TWSBI steel nib and clear ink converter, designed for the TWSBI Diamond 580 fountain pen series.
TWSBI
Diamond 580 Nib Set - Broad
-
$34.50
X
Diamond 580 Nib Set - Broad, showcasing a TWSBI steel nib and clear ink converter, designed for the TWSBI Diamond 580 fountain pen series.

Diamond 580 Nib Set - Broad

$34.50

TWSBI

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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) - Medium
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$68.00
X
TWSBI ECO (Amazonite) - Extra Fine fountain pens, featuring clear barrels and mint-green marbling, showcasing a piston-filling mechanism and stainless-steel nib.
/ 1 / 2 / 3

ECO (Amazonite) - Medium

$68.00

TWSBI

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

ECO (Caffe / Bronze) - Fine

$95.00

TWSBI

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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
-
$95.00
X
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

TWSBI

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