GC QUILL Fountain Pen Ink Cartridges 3.4mm Bore 72 Pack Black

3.4mm Bore Cartridge Pack

These cartridges are built for fountain pens that require a 3.4mm bore diameter. They suit writers who use GC QUILL pens or other models accepting this specific non-standard size. The 72-count supply supports daily writing, calligraphy, journaling and professional document work. Buyers with pens that take standard international cartridges cannot use this product.

72 Cartridges in Four Boxes

The set delivers 72 black cartridges divided into four boxes of 18 each. This volume handles extended writing sessions and frequent refills without running short. Heavy users who need more than 72 cartridges at once will find the pack insufficient for long-term stock. The medium ink flow matches general writing and creative tasks.

Mess-Free Replacement Design

Each cartridge is engineered for quick, clean changes that keep hands and pages free of ink stains. The compact boxes fit easily into a desk drawer, bag or travel case for on-the-go refills. Premium ink provides bold, fade-resistant black lines with consistent flow. Pens requiring a different bore diameter or converter system are not compatible.