Transform your fountain pen maintenance routine with this practical ink cartridge filler tool. This versatile syringe-style device makes refilling and cleaning your fountain pens simple and precise. The elastic design provides controlled ink absorption and dispensing, helping you avoid messy spills while maintaining your writing instruments. Perfect for both cartridge converters and direct filling, this instrument features a precise pipette mechanism that allows for accurate measurements when transferring ink. The durable construction ensures long-lasting use, making it an essential accessory for fountain pen enthusiasts. Whether you're refilling cartridges or cleaning your pen's feed system, this tool provides the precision and control you need. A must-have addition to your writing supplies collection that helps extend the life of your favorite fountain pens while keeping your workspace clean and organized.