Pack of 5 Fountain Pen Ink Converters, Bore Diameter 3.4mm, Screw-Type Push-Pull Ink Refill Cartridge Adapter for Standard International 3.4mm Nib Pens

Pack of 5 Fountain Pen Ink Converters, Bore Diameter 3.4mm, Screw-Type Push-Pull Ink Refill Cartridge Adapter for Standard International 3.4mm Nib Pens

• Wide Compatibility for 3.4mm Nib Pens – These ink converters are designed to fit most fountain pens that use a 3.4mm bore diameter, compatible with a wide range of pen models (excluding the M2 Series). Please check your pen’s bore size before purchase.
• Simple Twist-to-Fill Mechanism – Features a reliable screw-type plunger action. With just a simple twist, you can easily draw ink from any standard bottled ink, providing a clean and efficient refill experience.
• Precise Dimensions for Secure Fit – Each converter measures 71mm in length with a 3.4mm bore diameter, ensuring a snug and leak-free connection to the pen’s feed section.
• Value Pack of 5 – Includes 5 pieces of fountain pen ink converters, offering great value for daily writers, pen enthusiasts, or as backup replacements. Never worry about running out of usable converters.
• Eco-Friendly & Cost-Effective – Reusable design allows you to use bottled ink instead of disposable cartridges, reducing plastic waste while expanding your ink color choices.