Features: Smooth and Consistent Writing: These ballpoint pen refills provide a smooth and consistent writing experience, ensuring that your words flow effortlessly onto the page. Versatile Compatibility: Compatible with a variety of ballpoint pens, these refills can be easily replaced, making them suitable for both kids and adults. Vibrant Gel Ink Colors: With blue and black gel ink options, these pen refills add a touch of vibrancy to your writing. Whether you& 39;re taking notes or coloring, these refills are perfect for any occasion. Long-lasting Performance: Each refill is designed to last, providing you with hours of writing pleasure. Say goodbye to frequent pen replacements and enjoy uninterrupted writing or coloring sessions. Ideal Gifts for All Occasions: These pen refills make for great Christmas or New Year gifts. Whether it& 39;s for students, professionals, or artists, these refills are a practical and thoughtful choice. Specification: Material: ABS Length: 9.8cm 10pcs Ballpoint Pen Refills