Colour Demonstrator - 1.5mm mainsale TWSBI Blue-Black is an iron

TWSBI Blue-Black is an iron gall ink and is water-resistant

The ink represents such remarkably shining blue sea seen from the sky of the Minatojima Island

ensuring a style to suit every preference

This one works well with our Noodlers Ink bottles (both glass and plastic versions)

Discover Dusky Pink

Colour Demonstrator - 1.5mm mainsale TWSBI Blue-Black is an ironThe OPUS 88 Koloro Demonstrator is a dedicated eyedropper pen with a an acrylic body. The semi transparent body also allows for ink to be seen swishing. This pen utilises a #6 branded German nib for an amazing writing experience, and comes with an eyedropper tool included. Note: The demonstrator is slight larger than the coloured series. The cap also cannot be posted.