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) - Fine fountain pen, showing capped and uncapped views, highlighting the steel nib, ink reservoir, and piston-filling mechanism for TWSBI's versatile writing instrument.
TWSBI
ECO (Clear) - Fine
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$59.99
X
ECO (Clear) - Fine fountain pen, showing capped and uncapped views, highlighting the steel nib, ink reservoir, and piston-filling mechanism for TWSBI's versatile writing instrument.

ECO (Clear) - Fine

$59.99

TWSBI

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TWSBI ECO (Black) - Fine fountain pens, one capped, one with cap posted. Clear resin shows metal nib and piston-filling mechanism.
TWSBI
ECO (Black) - Fine
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$59.99
X
TWSBI ECO (Black) - Fine fountain pens, one capped, one with cap posted. Clear resin shows metal nib and piston-filling mechanism.

ECO (Black) - Fine

$59.99

TWSBI

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

VAC 700R (IRIS) - Fine

$150.00

TWSBI

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

ECO (White/ Rose Gold) - Fine

$95.00

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ECO (Transparent Purple) - Fine fountain pen, featuring clear body with purple accents, showing capped and uncapped views, revealing stainless steel nib and piston-filling mechanism.
TWSBI
ECO (Transparent Purple) - Fine
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$59.99
X
ECO (Transparent Purple) - Fine fountain pen, featuring clear body with purple accents, showing capped and uncapped views, revealing stainless steel nib and piston-filling mechanism.

ECO (Transparent Purple) - Fine

$59.99

TWSBI

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Diamond 580 (Smoke/Rose Gold) - Fine fountain pen, featuring a transparent barrel with visible piston mechanism, black screw-on cap, and rose-gold trim, shown capped and uncapped.
TWSBI
Diamond 580 (Smoke/Rose Gold) - Fine
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$155.00
X
Diamond 580 (Smoke/Rose Gold) - Fine fountain pen, featuring a transparent barrel with visible piston mechanism, black screw-on cap, and rose-gold trim, shown capped and uncapped.

Diamond 580 (Smoke/Rose Gold) - Fine

$155.00

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Diamond 580 Nib Set - Fine, showcasing a detachable TWSBI fountain pen nib section with steel nib, feed, and ink converter housing for versatile writing.
TWSBI
Diamond 580 Nib Set - Fine
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$34.50
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Diamond 580 Nib Set - Fine, showcasing a detachable TWSBI fountain pen nib section with steel nib, feed, and ink converter housing for versatile writing.

Diamond 580 Nib Set - Fine

$34.50

TWSBI

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ECO (Transparent Blue) - Fine fountain pen with a clear barrel showing the piston mechanism and stainless-steel nib; blue cap with TWSBI logo beside it.
TWSBI
ECO (Transparent Blue) - Fine
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$59.99
X
ECO (Transparent Blue) - Fine fountain pen with a clear barrel showing the piston mechanism and stainless-steel nib; blue cap with TWSBI logo beside it.
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ECO (Transparent Blue) - Fine

$59.99

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TWSBI GO (Smoke) - Fine fountain pens, one capped and one uncapped, showcasing transparent barrels with visible piston mechanisms and steel nibs.
TWSBI
GO (Smoke) - Fine
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$35.00
X
TWSBI GO (Smoke) - Fine fountain pens, one capped and one uncapped, showcasing transparent barrels with visible piston mechanisms and steel nibs.
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GO (Smoke) - Fine

$35.00

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Diamond 580 ALR (Nickel Gray) - Fine fountain pen, showcasing a clear barrel with piston filling, steel nib, matte aluminum detailing, and screw-on cap.
TWSBI
Diamond 580 ALR (Nickel Gray) - Fine
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$120.00
X
Diamond 580 ALR (Nickel Gray) - Fine fountain pen, showcasing a clear barrel with piston filling, steel nib, matte aluminum detailing, and screw-on cap.
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Diamond 580 ALR (Nickel Gray) - Fine

$120.00

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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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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
X
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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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

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

ECO (Persian Green) - Fine

$59.99

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

Diamond 580 ALR (Navy Blue) - Fine

$120.00

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TWSBI VAC 700R (Clear) - Fine fountain pen, transparent barrel with piston mechanism, silver nib, clear cap with red TWSBI logo, uncapped.
TWSBI
VAC 700R (Clear) - Fine
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$129.00
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TWSBI VAC 700R (Clear) - Fine fountain pen, transparent barrel with piston mechanism, silver nib, clear cap with red TWSBI logo, uncapped.
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VAC 700R (Clear) - Fine

$129.00

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

ECO (Cerulean) - Fine

$59.99

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

$105.00

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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

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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) - Fine
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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.
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ECO (Slate Blue / Onyx) - Fine

$95.00

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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
X
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
X
TWSBI ECO (Glow Purple) - Fine Fountain Pen
/ 1 / 2

ECO (Glow Purple) - Fine

$59.99

TWSBI

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

Diamond 580 (White/Rose Gold) - Fine

$155.00

TWSBI

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TWSBI Diamond 580 ALR (Punch Pink) - Fine Fountain Pen
TWSBI
Diamond 580 ALR (Punch Pink) - Fine
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$120.00
X
TWSBI Diamond 580 ALR (Punch Pink) - Fine Fountain Pen
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Diamond 580 ALR (Punch Pink) - Fine

$120.00

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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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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) - Fine
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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.
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ECO (Amazonite) - Fine

$68.00

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TWSBI VAC 700R (Kyanite) - Extra Fine fountain pen with a clear demonstrator design, showcasing a transparent barrel and cap, featuring a vacuum system and blue trim.
TWSBI
VAC 700R (Kyanite) - Fine
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$150.00
X
TWSBI VAC 700R (Kyanite) - Extra Fine fountain pen with a clear demonstrator design, showcasing a transparent barrel and cap, featuring a vacuum system and blue trim.
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VAC 700R (Kyanite) - Fine

$150.00

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

Diamond Mini AL (Grape) - Fine

$109.00

TWSBI

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

$59.99

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

$59.99

TWSBI

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

ECO (Glow) - Fine

$59.99

TWSBI

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

$43.50

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TWSBI GO (Clear) - Fine Fountain Pen
TWSBI
GO (Clear) - Fine
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$35.00
X
TWSBI GO (Clear) - Fine Fountain Pen
/ 1 / 2

GO (Clear) - Fine

$35.00

TWSBI

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new ECO (Cosmos Blue / Onyx) - Fine
TWSBI
ECO (Cosmos Blue / Onyx) - Fine
-
$105.00
X
ECO (Cosmos Blue / Onyx) - Fine
/ 1 / 2 / 3

ECO (Cosmos Blue / Onyx) - Fine

$105.00

TWSBI

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TWSBI Diamond 580 ALR (Iceberg) fountain pen, extra fine nib, clear with light blue accents, showcasing piston-fill mechanism and transparent body.
TWSBI
Diamond 580 ALR (Iceberg) - Fine
-
$120.00
X
TWSBI Diamond 580 ALR (Iceberg) fountain pen, extra fine nib, clear with light blue accents, showcasing piston-fill mechanism and transparent body.
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Diamond 580 ALR (Iceberg) - Fine

$120.00

TWSBI

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TWSBI TWSBI Kai (LE) - Fine Fountain Pen
TWSBI
TWSBI Kai (LE) - Fine
-
$235.00
X
TWSBI TWSBI Kai (LE) - Fine Fountain Pen
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TWSBI Kai (LE) - Fine

$235.00

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TWSBI Diamond 580 ALR (Sunset Yellow) - Fine Fountain Pen
TWSBI
Diamond 580 ALR (Sunset Yellow) - Fine
-
$120.00
X
TWSBI Diamond 580 ALR (Sunset Yellow) - Fine Fountain Pen

Diamond 580 ALR (Sunset Yellow) - Fine

$120.00

TWSBI

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TWSBI ECO (Heat) - Fine Fountain Pen
TWSBI
ECO (Heat) - Fine
-
$59.99
X
TWSBI ECO (Heat) - Fine Fountain Pen

ECO (Heat) - Fine

$59.99

TWSBI

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TWSBI SWIPE (Pear Green) - Fine Fountain Pen
TWSBI
SWIPE (Pear Green) - Fine
-
$43.50
X
TWSBI SWIPE (Pear Green) - Fine Fountain Pen

SWIPE (Pear Green) - Fine

$43.50

TWSBI

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