Description This universal fountain pen ink converter is designed to provide a seamless ink refilling experience. Its twist mechanism ensures smooth ink absorption, making it an essential tool for fountain pen enthusiasts. Crafted with precision, it fits most pens with a 2.2.6mm diameter, offering compatibility and convenience for daily writing tasks. Features - Color: Transparent -Material:Plastic - Size: 7.00X0.60X0.60cm/2.75X0.24X0.24in -Precision fit: designed with a 2.6 mm diameter, this universal fountain pen ink converter ensures a fit for a wide range of pens, making ink refilling a breeze -Easy rotation: the twist mechanism allows for effortless ink absorption, eliminating the hassle of traditional ink filling methods and saving you time -Waste reduction: the auxiliary ink filling technology minimizes ink wastage, ensuring you get the most out of your ink supply and enhancing your writing experience -Portable design: compact and lightweight, this ink converter is ideal for use in the office, school, or on the go, making it a versatile addition to your writing tools -High precision manufacturing: crafted with high precision, this ink converter smooth and stable ink flow every time, extending the lifespan of your fountain penPackage list: 10x pen ink absorber