UNIVERSAL COMPATIBILITY: Standard push-piston ink converter designed to fit most fountain pens, making it a versatile refill solution EFFICIENT DESIGN: Features a smooth-operating piston mechanism for easy and precise ink drawing from ink bottles CONVENIENT FILLING: Push-style converter allows for clean and controlled ink filling directly from ink wells or bottles DURABLE CONSTRUCTION: Made with high-quality materials to ensure reliable performance and long-lasting use PRACTICAL SIZE: Compact dimensions make it easy to carry as a spare and fits standard fountain pen barrels Universal Fountain Pen Ink Converter Standard Push Piston Fill InkAbsorber and Deft Writing and Correction Supplies Ink Well for Dip Pen Fountain Pens Pens and Refills