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The OPUS 88 Koloro Demonstrator is a dedicated eyedropper pen with an acrylic body
80 sheets / 160 pages
Tip: Depending on type of paper it is used on
It continues to feature the same TWSBI piston ink-filling system
No.135 Beijing - 60ml friendship The OPUS 88 Koloro DemonstratorPenbbs is a Chinese online fountain pen community not too dissimilar to its Western counterpart, Fountain Pen Network (FPN). Through the use of high quality resins and components, its range of well made fountain pens have garnered quite the following over the years. In addition to pens, Penbbs also have a massive line up of inks spanning pretty much the whole colour spectrum! For more PENBBS inks, see here.
