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 Diamond Mini AL (Grape) - Medium fountain pen with transparent body, purple accents, and stainless-steel nib, showcasing capped and uncapped views for detailed appreciation.
TWSBI
Diamond Mini AL (Grape) - Medium
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$109.00
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TWSBI Diamond Mini AL (Grape) - Medium fountain pen with transparent body, purple accents, and stainless-steel nib, showcasing capped and uncapped views for detailed appreciation.

Diamond Mini AL (Grape) - Medium

$109.00

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

$59.99

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TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, broad steel nib, and orange accents.
TWSBI
ECO-T (Saffron) - Broad
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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, broad steel nib, and orange accents.
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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) with Stub 1.1mm 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) - Stub 1.1mm
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$129.00
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TWSBI ECO-T Pen and Ink Set (Royal Jade/Rose Gold) with Stub 1.1mm 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) - Stub 1.1mm

$129.00

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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

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TWSBI Diamond 580 (Iris) - Extra Fine fountain pen with clear body, showcasing a rainbow-tone nib and internal piston-filling mechanism. One pen is capped, the other uncapped.
TWSBI
Diamond 580 (Iris) - Extra Fine
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$155.00
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TWSBI Diamond 580 (Iris) - Extra Fine fountain pen with clear body, showcasing a rainbow-tone nib and internal piston-filling mechanism. One pen is capped, the other uncapped.
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Diamond 580 (Iris) - Extra Fine

$155.00

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TWSBI Diamond 580 (White/Rose Gold) - medium fountain pen, featuring a clear demonstrator barrel, rose-gold nib, and visible piston-filling mechanism, shown capped and uncapped.
TWSBI
Diamond 580 (White/Rose Gold) - Medium
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$155.00
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TWSBI Diamond 580 (White/Rose Gold) - medium fountain pen, featuring a clear demonstrator barrel, rose-gold nib, and visible piston-filling mechanism, shown capped and uncapped.

Diamond 580 (White/Rose Gold) - Medium

$155.00

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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
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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.

Diamond 580 ALR (Navy Blue) - Extra Fine

$120.00

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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) - Broad
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$120.00
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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.

Diamond 580 ALR (Navy Blue) - Broad

$120.00

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

$95.00

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TWSBI ECO (Transparent Purple) - Broad Fountain Pen
TWSBI
ECO (Transparent Purple) - Broad
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$59.99
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TWSBI ECO (Transparent Purple) - Broad Fountain Pen

ECO (Transparent Purple) - Broad

$59.99

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

$35.00

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ECO-T (Clear) - Broad fountain pen with transparent barrel and cap, metal ink-reservoir converter, broad steel nib, and pronounced grip section for improved technique.
TWSBI
ECO-T (Clear) - Broad
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$59.99
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ECO-T (Clear) - Broad fountain pen with transparent barrel and cap, metal ink-reservoir converter, broad steel nib, and pronounced grip section for improved technique.
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ECO-T (Clear) - Broad

$59.99

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Diamond 580AL (Silver) - Broad fountain pen, showcasing a clear barrel with visible piston mechanism, silver grip, and a detached clear/silver cap.
TWSBI
Diamond 580AL (Silver) - Broad
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$120.00
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Diamond 580AL (Silver) - Broad fountain pen, showcasing a clear barrel with visible piston mechanism, silver grip, and a detached clear/silver cap.
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Diamond 580AL (Silver) - Broad

$120.00

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VAC Mini (Smoke) - Extra Fine fountain pen, uncapped, showcasing a clear barrel, black grip, silver nib, and transparent cap beside it, ideal for travel.
TWSBI
VAC Mini (Smoke) - Extra Fine
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$110.00
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VAC Mini (Smoke) - Extra Fine fountain pen, uncapped, showcasing a clear barrel, black grip, silver nib, and transparent cap beside it, ideal for travel.
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VAC Mini (Smoke) - Extra Fine

$110.00

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VAC Mini (Clear) - Broad, a TWSBI fountain pen with a transparent body, showcasing the vacuum system and steel nib; cap removed and placed beside the barrel.
TWSBI
VAC Mini (Clear) - Broad
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$110.00
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VAC Mini (Clear) - Broad, a TWSBI fountain pen with a transparent body, showcasing the vacuum system and steel nib; cap removed and placed beside the barrel.

VAC Mini (Clear) - Broad

$110.00

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

$105.00

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

$105.00

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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) - Broad
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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) - Broad

$155.00

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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) - Stub 1.1
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$165.00
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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) - Stub 1.1

$165.00

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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) - Stub 1.1
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$105.00
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TWSBI ECO fountain pen in Serpentine colourway with copper accents, displayed on a natural wooden surface
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ECO (Serpentine / Bronze) - Stub 1.1

$105.00

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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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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) - Broad
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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) - Broad

$95.00

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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
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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.
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ECO (Sky Blue) - 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) - Medium
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$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.
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ECO (Sky Blue) - Medium

$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) - Broad
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$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.
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ECO (Sky Blue) - Broad

$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 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) - Extra Fine
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$150.00
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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.
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VAC 700R (Kyanite) - Extra Fine

$150.00

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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) - Stub 1.1
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$159.00
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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.
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VAC 700R (Kyanite) - Stub 1.1

$159.00

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TWSBI ECO-T (Eggplant) fountain pen with transparent body, purple accents, and mediummm stainless-steel nib, showcasing internal piston-filling mechanism.
TWSBI
ECO-T (Eggplant) - Medium
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$59.99
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TWSBI ECO-T (Eggplant) fountain pen with transparent body, purple accents, and mediummm stainless-steel nib, showcasing internal piston-filling mechanism.
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ECO-T (Eggplant) - Medium

$59.99

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TWSBI ECO-T (Eggplant) fountain pen with transparent body, purple accents, and mediummm stainless-steel nib, showcasing internal piston-filling mechanism.
TWSBI
ECO-T (Eggplant) - Broad
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$59.99
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TWSBI ECO-T (Eggplant) fountain pen with transparent body, purple accents, and mediummm stainless-steel nib, showcasing internal piston-filling mechanism.
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ECO-T (Eggplant) - Broad

$59.99

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TWSBI ECO-T (Eggplant) fountain pen with transparent body, purple accents, and mediummm stainless-steel nib, showcasing internal piston-filling mechanism.
TWSBI
ECO-T (Eggplant) - Stub 1.1
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$59.99
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TWSBI ECO-T (Eggplant) fountain pen with transparent body, purple accents, and mediummm stainless-steel nib, showcasing internal piston-filling mechanism.
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ECO-T (Eggplant) - Stub 1.1

$59.99

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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
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$120.00
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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.
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Diamond 580 ALR (Iceberg) - Fine

$120.00

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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) - Medium
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$120.00
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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.
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Diamond 580 ALR (Iceberg) - Medium

$120.00

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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) - Stub 1.1
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$120.00
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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.
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Diamond 580 ALR (Iceberg) - Stub 1.1

$120.00

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TWSBI ECO (Dark Sapphire) fountain pen, broad nib, showcasing clear barrel and bright blue cap; one pen capped, one uncapped revealing metal nib.
TWSBI
ECO (Dark Sapphire) - Broad
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$59.99
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TWSBI ECO (Dark Sapphire) fountain pen, broad nib, showcasing clear barrel and bright blue cap; one pen capped, one uncapped revealing metal nib.
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ECO (Dark Sapphire) - Broad

$59.99

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

$120.00

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

$120.00

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

$120.00

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TWSBI Diamond 580ALR (Black) - Stub 1.1 fountain pen, transparent body with piston mechanism, steel nib, and matte aluminium grip, showcasing elegant design and functionality.
TWSBI
Diamond 580 ALR (Black) - Stub 1.1
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$120.00
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TWSBI Diamond 580ALR (Black) - Stub 1.1 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) - Stub 1.1

$120.00

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