5.00 out of 5
Based on 1 review.

12 - 14 Business days
Brand: Opus 88


The Opus 88 Koloro fountain pen is truly unique writing instrument. Featuring a sharp alternating material scheme of ebonite and resin, this pen’s design stands on its own. The name Koloro means color in Esperanto, and colourful is what this pen is. The Opus 88 Koloro is equipped with eyedropper filling system and center bar to regulate the ink flow. This is usually only available on high end eyedropper fountain pens. Having the translucent resin portions of the pen allows you to see both your current ink level and your nib while capped. The Opus 88 Koloro features chrome details and a stainless steel #5 JoWo nib. The pen can be filled with the included eyedropper and holds 2ml of ink.

Masterfully engineered to serve both form and function, Opus 88 pens transcend mere communication to reflect the artistry that is the written word. For over two decades, founder Michael Hsu has personally and painstakingly crafted each pen to exacting standards, selectively building his Opus 88 label for discering clientele. Those who recognize the power and beauty of an exquisite writing instrument appreciate his work. Since 1988, as an OEM/ODM supplier, Michael has earned a reputaion for excellence.

Opus 88 is a Taiwanese company. The name Opus was choosen because the company tries to tell the pen user that they are good in using different materials to create pens (materials like brass, wood, shell, sterling silver, acrylic, ebonite, etc.). The number 88 is a reference to the year the company was founded. The symbols in the logo are the Chinese word fort he family name of the company ‘’Hsu’’.

Additional information

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Length closed

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Length posted

1 review for Opus 88 Koloro Blue Fountain pen

  1. English

    Tiago Pires (verified owner)

    Attractive pen, made of a mix of beautiful blue acrylic with some ebonite pieces. The translucent resin provides a window into the ink reservoir, which, even against the light, can a bit hard to see with this dark blue.

    It has a comfortable warmth in the hand. The section is smooth but not slippery. It’s similar in length to a Lamy Safari but girthier. Not overly heavy, making it balanced for long writing sessions.

    The eyedropper mechanism allows for a lot of ink, but I find it hard to know when and how much to open or close the shutdown valve. If you let the ink run out in the barrel, it will take some effort to get it to flow again.

    I’ve tried the nib and feed that came with the pen briefly, and it was a pleasant, smooth nib, without any skips. However, I soon replaced it with a custom-made gold JoWo nib, modified to flex, which is my favorite nib, so maybe that makes me biased towards this pen.

    Overall, a very good buy.

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