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TWSBI

TWSBI

Watch your ink come alive

TWSBI fountain pens are known for modern piston-filling mechanisms, ink capacity and transparent designs. Fitted with German made nibs, they perform well straight out of the box. The Diamond 580 is the everyday writer, with a screw-off nib unit for easy nib changes and compatibility with the Diamond Inkwell. The Eco offers a simplified design with a friction fit nib and feed. Lesser known models include vacuum fillers with an ink shut-off valve for travel and the Swipe offering the convenience of standard cartridges or a spring converter. Good value range of soluble fountain pen inks supplied in frosted glass bottles. TWSBI pens are high flow, making them the ideal choice for our artist sketch kits. For further help with pen selection, see the TWSBI Top 7 list annotated by our staff. Visit our Blog for tips on pen cleaning and piston servicing.

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TWSBI Diamond 580 Rose Gold II Fountain Pen - Clear/smoke with rose gold trim - Medium Nib

$159.95 - $159.95
$159.95
$159.95
$159.95 - $159.95
$159.95

With TWSBI the game has changed!TWSBI combine simplicity and elegance in the very contemporary Diamond 580 fountain pen. By using a piston ink-fil...

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$159.95 - $159.95
$159.95
$159.95
$159.95 - $159.95
$159.95

TWSBI Vac 700R Iris Fountain Pen - Clear with plated aluminium trim - Medium Nib

$159.95 - $159.95
$159.95
$159.95 - $159.95
$159.95

With TWSBI the game has changed!Simply pull up, push down and your ink is filled, ready to go.Vacuum filler type fountain pen designed with a ink s...

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$159.95 - $159.95
$159.95
$159.95 - $159.95
$159.95

TWSBI Diamond 580ALR Caribbean Fountain Pen - Onyx plated Medium Nib

$159.95 - $159.95
$159.95
$159.95 - $159.95
$159.95

With TWSBI the game has changed! TWSBI combine simplicity and elegance in the very contemporary Diamond 580 fountain pen. By using a piston ink-fil...

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$159.95 - $159.95
$159.95
$159.95 - $159.95
$159.95

TWSBI Diamond Mini White Rose Gold II Fountain Pen - Medium Nib

$149.95 - $149.95
$149.95
$149.95 - $149.95
$149.95

With TWSBI the game has changed!TWSBI combine simplicity and elegance in the very contemporary Diamond Mini Clear fountain pen. By using a piston ...

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$149.95 - $149.95
$149.95
$149.95 - $149.95
$149.95

TWSBI Diamond 580 Iris Fountain Pen - Clear with plated aluminium trim - Medium Nib

$149.95 - $149.95
$149.95
$149.95
$149.95 - $149.95
$149.95

TWSBI combine simplicity and elegance in the very contemporary Diamond 580 fountain pen. By using a piston ink-filling system, TWSBI has been able ...

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$149.95 - $149.95
$149.95
$149.95
$149.95 - $149.95
$149.95
TWSBI Diamond 580AL R Nickel Grey Fountain Pen - Clear body with Nickel Grey trims
TWSBI Diamond 580AL R Nickel Grey Fountain Pen - Clear body with Nickel Grey trims

TWSBI Diamond 580ALR Nickel Grey Fountain Pen - Clear body with Nickel Grey trims - Medium Nib

$139.95 - $139.95
$139.95
$139.95
$139.95 - $139.95
$139.95

With TWSBI the game has changed! TWSBI combine simplicity and elegance in the very contemporary Diamond 580 fountain pen. By using a piston ink-fil...

View full details
$139.95 - $139.95
$139.95
$139.95
$139.95 - $139.95
$139.95

TWSBI Diamond 580ALR Navy Blue Fountain Pen - Clear body with Blue trim - Medium Nib

$139.95 - $139.95
$139.95
$139.95
$139.95 - $139.95
$139.95

With TWSBI the game has changed! TWSBI combine simplicity and elegance in the very contemporary Diamond 580 fountain pen. By using a piston ink-fil...

View full details
$139.95 - $139.95
$139.95
$139.95
$139.95 - $139.95
$139.95
TWSBI Vac 700R Fountain Pen - Clear with aluminium trim - Medium Nib

TWSBI Vac 700R Fountain Pen - Clear with aluminium trim - Medium Nib

$139.95 - $139.95
$139.95
$139.95 - $139.95
$139.95

With TWSBI the game has changed! Simply pull up, push down and your ink is filled, ready to go. Vacuum filler type fountain pen designed with a ink...

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$139.95 - $139.95
$139.95
$139.95 - $139.95
$139.95

TWSBI Diamond 580AL Rose Fountain Pen - Clear with silver aluminium trim - Medium Nib

$129.95 - $129.95
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$129.95 - $129.95
$129.95

With TWSBI the game has changed!TWSBI combine simplicity and elegance in the very contemporary Diamond 580 fountain pen. By using a piston ink-fil...

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$129.95 - $129.95
$129.95
$129.95
$129.95 - $129.95
$129.95
TWSBI Diamond 580AL Silver Fountain Pen - Clear with silver aluminium trim

TWSBI Diamond 580AL Silver Fountain Pen - Clear with silver aluminium trim - Medium Nib

$129.95 - $129.95
$129.95
$129.95
$129.95 - $129.95
$129.95

With TWSBI the game has changed!TWSBI combine simplicity and elegance in the very contemporary Diamond 580 fountain pen. By using a piston ink-fil...

View full details
$129.95 - $129.95
$129.95
$129.95
$129.95 - $129.95
$129.95

TWSBI Diamond 580ALR Black Fountain Pen - Clear body with Black trim - Medium Nib

$129.95 - $129.95
$129.95
$129.95
$129.95 - $129.95
$129.95

With TWSBI the game has changed! TWSBI combine simplicity and elegance in the very contemporary Diamond 580 fountain pen. By using a piston ink-fil...

View full details
$129.95 - $129.95
$129.95
$129.95
$129.95 - $129.95
$129.95

TWSBI Diamond 580AL Iceberg Fountain Pen - Clear with light blue/silver aluminium trim - Medium Nib

$129.95 - $129.95
$129.95
$129.95 - $129.95
$129.95

With TWSBI the game has changed! TWSBI combine simplicity and elegance in the very contemporary Diamond 580 fountain pen. By using a piston ink-fil...

View full details
$129.95 - $129.95
$129.95
$129.95 - $129.95
$129.95

TWSBI Vac Mini Fountain Pen - Smoke/Clear - Medium Nib

$129.95 - $129.95
$129.95
$129.95 - $129.95
$129.95

With TWSBI the game has changed! Simply pull up, push down and your ink is filled, ready to go. Vacuum filler type fountain pen designed with a ink...

View full details
$129.95 - $129.95
$129.95
$129.95 - $129.95
$129.95

TWSBI Eco-T Fountain Pen - Royal Jade/Rose Gold Gift Set with Midnight Blue Ink - Medium Nib

$128.90 - $128.90
$128.90
$128.90 - $128.90
$128.90

TWSBI has changed the game!TWSBI Eco-T combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling syste...

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$128.90 - $128.90
$128.90
$128.90 - $128.90
$128.90
TWSBI Classic Fountain Pen - Sapphire Blue

TWSBI Classic Fountain Pen - Sapphire Blue - Medium Nib

$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

With TWSBI the game has changed!TWSBI combine simplicity and elegance in the very contemporary Classic fountain pen. By using a piston ink-filling...

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$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95
TWSBI Diamond 580 Fountain Pen - Red / Clear / Blue (limited edition)
TWSBI Diamond 580 Fountain Pen - Red / Clear / Blue (limited edition)

TWSBI Diamond 580RBT Fountain Pen - Red / Clear / Blue - Medium Nib

$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

With TWSBI the game has changed! TWSBI combine simplicity and elegance in the very contemporary Diamond 580 fountain pen. By using a piston ink-fil...

View full details
$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95
TWSBI Diamond Mini Clear Fountain Pen

TWSBI Diamond Mini Clear Fountain Pen - Clear - Medium Nib

$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

With TWSBI the game has changed!TWSBI combine simplicity and elegance in the very contemporary Diamond Mini Clear fountain pen. By using a piston ...

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$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

TWSBI Eco Fountain Pen - White with Rose Gold - Medium Nib

$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

The long awaited rose gold trimmed TWSBI. Pair with a navy notebook and navy ink. Yum! TWSBI Eco combines simplicity and elegance in this very cont...

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$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

TWSBI Eco Fountain Pen - Smoke with Rose Gold - Medium Nib

$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

The long awaited rose gold trimmed TWSBI. Pair with a navy notebook and navy ink. Yum!TWSBI Eco combines simplicity and elegance in this very conte...

View full details
$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

TWSBI Eco Fountain Pen - Indigo Blue with Bronze - Medium Nib

$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

The long awaited brass coloured trimmed TWSBI. Pair with a navy notebook and navy ink. Yum! TWSBI Eco combines simplicity and elegance in this very...

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$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

TWSBI Eco Fountain Pen - Creme with Rose Gold - Medium Nib

$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system, TWSBI has been able to cre...

View full details
$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

TWSBI Eco Fountain Pen - Caffe with Bronze - Medium Nib

$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

The long awaited bronze coloured trimmed TWSBI. TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a pisto...

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$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

TWSBI Eco Fountain Pen - Irish Green with Onyx - Medium Nib

$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

The long awaited TWSBI Irish green coloured coloured Eco with Onyx trim. TWSBI Eco combines simplicity and elegance in this very contemporary fount...

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$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

TWSBI Eco Fountain Pen - Slate Blue with Onyx - Medium Nib

$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

Limited edition TWSBI Slate Blue coloured coloured Eco with Onyx trim, launching 28 March 2025. TWSBI Eco combines simplicity and elegance in this ...

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$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95

TWSBI Eco Fountain Pen - Amazonite - Medium Nib

$69.95 - $69.95
$69.95
$69.95
$69.95 - $69.95
$69.95

TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system, TWSBI has been able to cre...

View full details
$69.95 - $69.95
$69.95
$69.95
$69.95 - $69.95
$69.95

TWSBI Eco Fountain Pen - Matcha Green - Medium Nib

$69.95 - $69.95
$69.95
$69.95 - $69.95
$69.95

Matcha is a finely ground powder of  green tea specially processed from shade-grown tea leaves. Shade growing gives matcha its characteristic brigh...

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$69.95 - $69.95
$69.95
$69.95 - $69.95
$69.95
TWSBI Eco Fountain Pen - Clear / Black

TWSBI Eco Fountain Pen - Clear / Black - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI has changed the game!TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system,...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95
TWSBI Eco Fountain Pen - Clear / Clear

TWSBI Eco Fountain Pen - Clear / Clear - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI has changed the game! TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95
TWSBI Eco Fountain Pen - Clear / Transparent Blue

TWSBI Eco Fountain Pen - Clear / Transparent Blue - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI has changed the game!TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system,...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95
TWSBI Eco Fountain Pen - Clear / White

TWSBI Eco Fountain Pen - Clear / White - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI has changed the game!TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system,...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95
TWSBI Eco-T Fountain Pen - Clear

TWSBI Eco-T Fountain Pen - Clear - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI has changed the game!TWSBI Eco-T combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling syste...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco Fountain Pen - Clear / Transparent Purple - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI has changed the game!TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system,...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco-T Fountain Pen - Mint Blue - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI has changed the game!TWSBI Eco-T combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling syste...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95
TWSBI Eco Fountain Pen - Clear / Transparent Purple

TWSBI Eco Fountain Pen - Clear / Transparent Yellow - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI has changed the game! TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco Fountain Pen - Glow Green - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system, TWSBI has been able to cre...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco Fountain Pen - Glow Purple - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system, TWSBI has been able to cre...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco-T Fountain Pen - Saffron - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI has changed the game!TWSBI Eco-T combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling syste...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco Fountain Pen - Persian Green - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system, TWSBI has been able to cre...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco Fountain Pen - Persian Green - 1.1 Italic (stub) Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system, TWSBI has been able to cre...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco Fountain Pen - Heat - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system, TWSBI has been able to cre...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco-T Fountain Pen - Eggplant - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI has changed the game! TWSBI Eco-T combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling syst...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco Fountain Pen - Sky Blue - Medium Nib

$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95

TWSBI Eco combines simplicity and elegance in this very contemporary fountain pen. By using a piston ink-filling system, TWSBI has been able to cre...

View full details
$59.95 - $59.95
$59.95
$59.95
$59.95 - $59.95
$59.95
TWSBI Vac 700R Iris Replacement Nib

TWSBI Diamond 580 Iris Replacement Nib (Nib unit only) - Medium

$54.95 - $54.95
$54.95
$54.95 - $54.95
$54.95

Replacement nib unit for TWSBI Diamond 580 Iris fountain pen. This replacement nib has the same iridescent colouring as the original IRIS pens. Ite...

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$54.95 - $54.95
$54.95
$54.95 - $54.95
$54.95
TWSBI Vac 700R Replacement Nib - M
TWSBI Vac 700R Replacement Nib - M

TWSBI Vac 700R Replacement Nib - Medium

$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95

Replacement nib unit for TWSBI Vac 700R. Just screw off the original nib unit and screw this one on. Compatible with the 700R models (not the origi...

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$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95
TWSBI Vac 700R Iris Replacement Nib

TWSBI Vac 700R Iris Replacement Nib - Medium

$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95

This is a replacement nib and feed for the TWSBI Iris Vac 700R. To exchange your nib, pull out the old nib and feed, noting the orientation of the ...

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$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95
TWSBI GO Fountain Pen - Spring Load Mechanism - Sapphire Blue Colour

TWSBI Swipe Fountain Pen - Spring Loaded Converter - Prussian Blue Colour - Medium Nib

$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95

The TWSBI SWIPE is a traditional cartridge, converter type fountain pen. The pen is packaged with a spring converter and a single cartridge. The hi...

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$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95

TWSBI Swipe Fountain Pen - Spring Loaded Converter - Smoke Colour - Medium Nib

$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95

The TWSBI SWIPE is a traditional cartridge, converter type fountain pen. The pen is packaged with a spring converter and a single cartridge. The hi...

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$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95

TWSBI Swipe Fountain Pen - Spring Loaded Converter - Salmon Colour - Medium Nib

$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95

The TWSBI SWIPE is a traditional cartridge, converter type fountain pen. The pen is packaged with a spring converter and a single cartridge. The hi...

View full details
$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95

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