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 ECO (Irish Green/ Onyx) - Medium Fountain Pen
TWSBI
ECO (Irish Green/ Onyx) - Broad
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$95.00
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TWSBI ECO (Irish Green/ Onyx) - Medium Fountain Pen
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ECO (Irish Green/ Onyx) - Broad

$95.00

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TWSBI Glass Ball Ink Holder Accessories
TWSBI
Glass Ball Ink Holder
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$155.00
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TWSBI Glass Ball Ink Holder Accessories
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Glass Ball Ink Holder

$155.00

TWSBI

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TWSBI ECO (Creme / Rose Gold) - Stub 1.1 Fountain Pen
TWSBI
ECO (Creme / Rose Gold) - Stub 1.1
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$95.00
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TWSBI ECO (Creme / Rose Gold) - Stub 1.1 Fountain Pen
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ECO (Creme / Rose Gold) - Stub 1.1

$95.00

TWSBI

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TWSBI Diamond Mini AL (Grape) - Fine Fountain Pen
TWSBI
Diamond Mini AL (Grape) - Fine
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$109.00
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TWSBI Diamond Mini AL (Grape) - Fine Fountain Pen

Diamond Mini AL (Grape) - Fine

$109.00

TWSBI

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TWSBI Diamond Mini AL (Grape) - Broad Fountain Pen
TWSBI
Diamond Mini AL (Grape) - Broad
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$109.00
X
TWSBI Diamond Mini AL (Grape) - Broad Fountain Pen

Diamond Mini AL (Grape) - Broad

$109.00

TWSBI

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TWSBI ECO (Persian Green) - Broad Fountain Pen
TWSBI
ECO (Persian Green) - Broad
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$59.99
X
TWSBI ECO (Persian Green) - Broad Fountain Pen

ECO (Persian Green) - Broad

$59.99

TWSBI

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

$59.99

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TWSBI ECO-T (Saffron) - Broad Fountain Pen
TWSBI
ECO-T (Saffron) - Broad
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$59.99
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TWSBI ECO-T (Saffron) - Broad Fountain Pen
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ECO-T (Saffron) - Broad

$59.99

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TWSBI ECO-T Pen and Ink Set (Royal Jade / Rose Gold) - Fine Fountain Pen
TWSBI
ECO-T Pen and Ink Set (Royal Jade / Rose Gold) - Fine
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$129.00
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TWSBI ECO-T Pen and Ink Set (Royal Jade / Rose Gold) - Fine Fountain Pen
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ECO-T Pen and Ink Set (Royal Jade / Rose Gold) - Fine

$129.00

TWSBI

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TWSBI ECO (Glow Purple) - Fine Fountain Pen
TWSBI
ECO (Glow Purple) - Fine
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$59.99
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TWSBI ECO (Glow Purple) - Fine Fountain Pen
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ECO (Glow Purple) - Fine

$59.99

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TWSBI ECO (Glow Purple) - Stub 1.1mm Fountain Pen
TWSBI
ECO (Glow Purple) - Stub 1.1mm
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$59.99
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TWSBI ECO (Glow Purple) - Stub 1.1mm Fountain Pen
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ECO (Glow Purple) - Stub 1.1mm

$59.99

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

ECO (Cerulean) - Extra Fine

$59.99

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TWSBI ECO (Cerulean) - Broad Fountain Pen
TWSBI
ECO (Cerulean) - Broad
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$59.99
X
TWSBI ECO (Cerulean) - Broad Fountain Pen

ECO (Cerulean) - Broad

$59.99

TWSBI

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TWSBI ECO (Cerulean) - Stub 1.1mm Fountain Pen
TWSBI
ECO (Cerulean) - Stub 1.1mm
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$59.99
X
TWSBI ECO (Cerulean) - Stub 1.1mm Fountain Pen

ECO (Cerulean) - Stub 1.1mm

$59.99

TWSBI

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TWSBI ECO (Glow) - Stub 1.1mm Fountain Pen
TWSBI
ECO (Glow) - Stub 1.1mm
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$59.99
X
TWSBI ECO (Glow) - Stub 1.1mm Fountain Pen

ECO (Glow) - Stub 1.1mm

$59.99

TWSBI

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TWSBI Diamond 580 (White/Rose Gold) - Medium Fountain Pen
TWSBI
Diamond 580 (White/Rose Gold) - Medium
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$155.00
X
TWSBI Diamond 580 (White/Rose Gold) - Medium Fountain Pen

Diamond 580 (White/Rose Gold) - Medium

$155.00

TWSBI

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

Diamond 580 ALR (Navy Blue) - Medium

$120.00

TWSBI

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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

TWSBI

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

$43.50

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

$43.50

TWSBI

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

Diamond Mini Rose Gold II (White) - Broad

$135.00

TWSBI

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TWSBI TWSBI Sapphire Blue - 2ml Ink Sample
TWSBI
TWSBI Sapphire Blue - 2ml
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$2.00
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TWSBI TWSBI Sapphire Blue - 2ml Ink Sample
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TWSBI Sapphire Blue - 2ml

$2.00

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VAC20A Ink Bottle - Orange: A clear glass vessel with a black screw-on midsection and translucent orange cap, designed for TWSBI pen refilling.
TWSBI
VAC20A Ink Bottle - Orange
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$29.00
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VAC20A Ink Bottle - Orange: A clear glass vessel with a black screw-on midsection and translucent orange cap, designed for TWSBI pen refilling.
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VAC20A Ink Bottle - Orange

$29.00

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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.
/ 1 / 2

ECO (Transparent Blue) - Extra Fine

$59.99

TWSBI

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Diamond Mini Nib Set - Broad, featuring a steel fountain-pen nib with plastic feed and threaded housing, designed for TWSBI Diamond Mini fountain pens.
TWSBI
Diamond Mini Nib Set - Broad
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$33.50
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Diamond Mini Nib Set - Broad, featuring a steel fountain-pen nib with plastic feed and threaded housing, designed for TWSBI Diamond Mini fountain pens.

Diamond Mini Nib Set - Broad

$33.50

TWSBI

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Diamond Mini Nib Set - Fine features a steel nib with a feed and part of the grip section, compatible with TWSBI's Diamond Mini fountain pens.
TWSBI
Diamond Mini Nib Set - Fine
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$33.50
X
Diamond Mini Nib Set - Fine features a steel nib with a feed and part of the grip section, compatible with TWSBI's Diamond Mini fountain pens.

Diamond Mini Nib Set - Fine

$33.50

TWSBI

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Diamond Mini (Clear) - Medium fountain pens showing piston-filling mechanisms. One capped, one uncapped revealing stainless-steel nib, with transparent barrels and silver-colored trim.
TWSBI
Diamond Mini (Clear) - Medium
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$92.00
X
Diamond Mini (Clear) - Medium fountain pens showing piston-filling mechanisms. One capped, one uncapped revealing stainless-steel nib, with transparent barrels and silver-colored trim.
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Diamond Mini (Clear) - Medium

$92.00

TWSBI

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Diamond Mini (Clear) - Fine fountain pen, featuring a transparent body with silver trim. One pen capped, the other uncapped, showcasing the steel nib and piston mechanism.
TWSBI
Diamond Mini (Clear) - Fine
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$92.00
X
Diamond Mini (Clear) - Fine fountain pen, featuring a transparent body with silver trim. One pen capped, the other uncapped, showcasing the steel nib and piston mechanism.
/ 1 / 2

Diamond Mini (Clear) - Fine

$92.00

TWSBI

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VAC 700R (Clear) - Broad fountain pen with a transparent barrel, visible piston mechanism, metal nib, and detached cap marked “TWSBI”, showcasing its vacuum filling system.
TWSBI
VAC 700R (Clear) - Broad
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$129.00
X
VAC 700R (Clear) - Broad fountain pen with a transparent barrel, visible piston mechanism, metal nib, and detached cap marked “TWSBI”, showcasing its vacuum filling system.
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VAC 700R (Clear) - Broad

$129.00

TWSBI

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new ECO (Cosmos Blue / Onyx) - Extra Fine
TWSBI
ECO (Cosmos Blue / Onyx) - Extra Fine
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$105.00
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ECO (Cosmos Blue / Onyx) - Extra Fine
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ECO (Cosmos Blue / Onyx) - Extra Fine

$105.00

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new ECO (Cosmos Blue / Onyx) - Medium
TWSBI
ECO (Cosmos Blue / Onyx) - Medium
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$105.00
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ECO (Cosmos Blue / Onyx) - Medium
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ECO (Cosmos Blue / Onyx) - Medium

$105.00

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new ECO (Cosmos Blue / Onyx) - Broad
TWSBI
ECO (Cosmos Blue / Onyx) - Broad
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$105.00
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ECO (Cosmos Blue / Onyx) - Broad
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ECO (Cosmos Blue / Onyx) - Broad

$105.00

TWSBI

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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) - Medium
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$155.00
X
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) - Medium

$155.00

TWSBI

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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) - Broad
-
$155.00
X
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) - Broad

$155.00

TWSBI

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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.
TWSBI
ECO (Slate Blue / Onyx) - Broad
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$95.00
X
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.
/ 1 / 2 / 3

ECO (Slate Blue / Onyx) - Broad

$95.00

TWSBI

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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.
TWSBI
ECO (Slate Blue / Onyx) - Stub 1.1
-
$95.00
X
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.
/ 1 / 2 / 3

ECO (Slate Blue / Onyx) - Stub 1.1

$95.00

TWSBI

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TWSBI ECO (Sky Blue) - Broad Fountain Pen
TWSBI
ECO (Sky Blue) - Stub 1.1
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$59.99
X
TWSBI ECO (Sky Blue) - Broad Fountain Pen
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ECO (Sky Blue) - Stub 1.1

$59.99

TWSBI

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TWSBI ECO (Amazonite) - Extra Fine Fountain Pen
TWSBI
ECO (Amazonite) - Fine
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$68.00
X
TWSBI ECO (Amazonite) - Extra Fine Fountain Pen
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ECO (Amazonite) - Fine

$68.00

TWSBI

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TWSBI ECO (Amazonite) - Extra Fine Fountain Pen
TWSBI
ECO (Amazonite) - Broad
-
$68.00
X
TWSBI ECO (Amazonite) - Extra Fine Fountain Pen
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ECO (Amazonite) - Broad

$68.00

TWSBI

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TWSBI VAC 700R (Kyanite) - Broad Fountain Pen
TWSBI
VAC 700R (Kyanite) - Fine
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$150.00
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TWSBI VAC 700R (Kyanite) - Broad Fountain Pen
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VAC 700R (Kyanite) - Fine

$150.00

TWSBI

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