20Pcs Pen Refills, 4.5'' Refills Black Ballpoint Medium Point 1.0mm, Cross Refill 8513 Compatible, Replaceable Pens Refill, Smooth Writing Ink Suitable for Office & Personal Use

Package Includes: 20 premium black ballpoint pen refills. These biro refills ensure you never run out of ink during important tasks. Ideal for bulk users or offices needing reliable ballpoint pen refills replacements. Each cartridge is vacuum-sealed to prevent drying and comes ready for immediate use in compatible twist-action pens. Premium Material: Crafted with durable metal barrels for exceptional wear resistance. The 1.0mm medium point delivers consistent lines without skipping, while premium ink flows smoothly on all paper types. Protective anti-corrosion coating prevents ink leakage and extends shelf life significantly compared to standard biro refills. Easy to Use: Designed for fuss-free installation in most twist-operated ballpoint pens. Simply remove exhausted cartridge and insert new refill. No tools required - perfect for quick office maintenance or home use. These universal ball point pen refills maintain your pen's original writing performance with minimal effort. Keep extras handy in drawers, briefcases or desk organisers for uninterrupted productivity. Professional Performance: Engineered for high-volume writing with quick-drying, smudge-resistant ink that prevents hand staining. The sleek black metal barrel complements executive pens, while 115mm length (±0.02mm tolerance) ensures precise compatibility. Anti-roll design keeps refills stationary on desks during replacement. Ideal biro refills black for contracts, signatures and daily documentation. Universal Compatibility: These black pen refills are designed to fit cross pen, ensuring a perfect fit for your favorite writing tool. Experience seamless fit with these precision-engineered ballpoint pen refills measuring 115mm length. Designed for twist-action mechanisms, they deliver reliable performance in most compatible pens requiring standard refill dimensions. Ideal solution for ball point pen refills needs in offices, schools or home studies. Always check your pen's refill specifications before purchase to ensure optimal performance.