● Versatile Colors: This refill set comes in 3 ink colors- black, red, and blue- so you can have more options to write with. ● 7mm ballpoint tips ensure a smooth writing experience every time you use these pens. ● Long-Lasting: Each refill provides a long-lasting ink supply for consistent, uninterrupted writing. ● Convenient Set: This set includes 20 refill replacements, making it cost-effective and convenient to use for office and personal use. ● Compatible: These pen refills are compatible with most ballpoint pens, making it easy to replace and continue using your favorite pens.