RAPID DRYING FORMULA: Our Monaggio blue fountain pen ink features an advanced formulation designed for swift drying, ensuring that your writing dries quickly on paper, eliminating smudges and smears for a seamless writing experience. SMOOTH, CLOG-FREE FLOW: Experience effortless writing with our blue fountain pen ink, as it boasts a consistent and smooth flow without any clogging. Say goodbye to interruptions and enjoy uninterrupted, flawless writing every time you use our product. VALUE PACK: Our blue ink cartridges come in a budget-friendly pack of 20, ensuring you always have a reliable supply for uninterrupted, smooth writing experiences that fit almost any pen on the market. SAFE AND NON-TOXIC: Rest easy knowing that our fountain pen ink cartridges are crafted from non-toxic materials SATISFACTION GUARANTEED: Monaggio is a US-based, family owned business. We strive for high quality products and customer satisfaction