The Platinum Carbon Black Chou Kuro Ink 60ml Bottle Fountain Pen Writing Ink is a high-quality writing ink designed for fountain pens. This black ink, with a size of 2 fl oz in a bottle container, is perfect for creating bold and crisp writing. The 60ml volume is ideal for extended writing sessions without the need for frequent refills. This ink is a must-have for pen enthusiasts looking for a premium writing experience.