✅ NON-TOXIC. ZenZoi ink cartridges have a neutral PH, professional coverage and quality providing a smooth flow with each stroke.
✅ PRACTICAL SIZE. International/standard size of these cartridges make them generic and practical: they fit almost every cartridge/converter fountain pen on the market (including all ZenZoi fountain pens and all pens that work with international cartridge sizes).
✅ VALUE PACK of 24 cartridges assures you'll not run out fast. Eliminates the need to keep reordering often.
✅ CLASSIC VARIETY. Each pack includes this color: 24 Black cartridges. For variety set or Blue-Black mixed set please see our other products.
✅ 100% MONEY-BACK. No-questions-asked, no hassle guarantee. If for any reason our product is not what you wanted just messaged us for a full refund. With us you always shop stress-free. Because we're a family operated business, treating our customers like collaborators and family is simply our long term strategy to work and live. We put you first and we mean it.