Description This spring converter for pens combines a transparent fountain pen converter design with a rotary screw filler converter mechanism, making it a classic writing tool converter. The reusable ink converter is crafted from durable plastic, allowing users to easily fill their fountain pens with bottled ink. Compatible with universal fountain pen bodies, it delivers smooth ink flow for an elegant handwriting experience at work, in study, or creative tasks. Features -Color:Transparent -Material:Plastic -Size:7.00X0.60X0.60cm/2.75X0.24X0.24in -Effortless refilling: the fountain pen ink converter ensures a quick and messfree refill from bottled ink, making your writing uninterrupted and stressfree even during intensive tasks -Universal compatibility: designed as a universal fountain pen converter, it easily fits most classic pens, giving you flexibility to use with different brands and models for all your creative and professional needs -Precise ink flow: with the piston ink converter mechanism, this pen ink absorber keeps a consistent flow, preventing blotches and delivering a refined writing experience suitable for calligraphy and everyday notes -Durable material: crafted from strong plastic, the reusable pen ink converter is resistant to frequent wear, minimizing the need for constant replacements and saving you time and costs -Sleek appearance: the transparent fountain pen converter offers a clear view of the ink reservoir, adding elegance to your pen making supplies and enhancing the sophistication of your writing toolPackage list: 50 x pen ink absorber accessories