This gel ink pen refill measures 130mm or 13cm in length and is compatible with a variety of pen types. The refill comes in black ink and features a ridged design, making it easy to grip and write with. Ideal for collectors or those who simply enjoy writing with quality pens, this refill is a must-have for any writing enthusiast. The refill is specifically designed for gel pens and falls under the category of ballpoint pens, pens, pens and writing equipment, and collectables. With its high-quality ink and comfortable grip, this refill is perfect for everyday use or special occasions. Whether you're writing a letter, taking notes, or doodling, this gel ink pen refill is sure to impress.