The Cross Blue Ballpoint Pen Refill, medium point (M), is the most versatile option for everyday use, balancing writing comfort with a well-defined line. Manufactured to the brand's quality standards, it guarantees quick-drying ink and consistent flow, preventing smudges and skips during writing. It is compatible with most Cross ballpoint pens, making it a practical way to keep your pen always ready to use without needing to replace it. The blue color is the most commonly used in everyday school and professional life, suitable for note-taking and daily correspondence.