Demonstrator (Yellow) - Fine
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The OPUS 88 Koloro Demonstrator is a dedicated eyedropper pen with 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.