A refillable rollerball pen that takes standard short fountain pen ink cartridges which means you’re not limited to a single refill type or a handful of colours. Load it with any J. Herbin cartridge (or any other brand’s international short cartridge) and you have a rollerball pen with the colour range of a fountain pen collection.

At just 8g and 9.7cm when open, it’s featherlight and compact enough to disappear into a pocket or pencil case. The medium nib writes a line of approximately 0.5mm smooth, reliable, and economical in the long run. A genuinely clever pen at a price that makes you wonder why more people don’t know about it.

Small Details, Big Difference

Fountain pen ink in a rollerball: Standard short cartridges give you access to dozens of ink colours without changing pen.

Economical and refillable: No proprietary refills just swap cartridges from any brand that makes them.

Incredibly light and portable: At 8g, it’s the pen you carry everywhere and never notice until you need it.

Details

Nib: Medium (~0.5mm line)
Length: 11.8cm (closed) / 9.7cm (open) / 13.9cm (posted)
Width: 1.2cm
Weight: 8g
Cartridge: Standard short international
Made in France