2 Pcs Black Universal Fountain Pen Ink Converter Standard Push Piston Fill InkAbsorber Office School Writing Supplies Pens and Refills

UNIVERSAL COMPATIBILITY: Standard push-style piston ink converter designed to fit most fountain pens with standard cartridge fittings DUAL VALUE PACK: Set includes two black ink converters, perfect for backup or sharing with fellow fountain pen enthusiasts EFFICIENT DESIGN: Push-piston mechanism ensures smooth and reliable ink filling from bottled fountain pen ink PRACTICAL USE: Ideal for both office and school environments, allowing continuous writing without frequent cartridge changes REFILLABLE SOLUTION: Economical and convenient alternative to disposable ink cartridges, compatible with most bottled fountain pen inks