What you get: Package contains 50 pieces of blue replaceable pen refills, each measuring 3.9 inches (9.9 cm) in length with a 1.0 mm medium point for smooth writing. A large quantity of refills provides ample supply for daily use and allows sharing with classmates or colleagues. Wide applications: The medium point metal refill is suitable for various settings such as office, business, classroom, school, home, and shops. These refills can also be used as practical gifts for friends, family, children, or students. Quality material: The outer shell of the retractable pen refill is made of durable metal, while the inner ink is formulated for high color rendering and consistent flow, ensuring reliable performance and smooth writing or drawing on paper. Convenient to use: The ballpoint pen refill is compact and portable, easy to carry in pockets or bags without concerns about ink leakage. Its pocket-friendly size makes it ideal for everyday storage, travel, or business trips. Nice performance: The 1.0 mm tip blue ink refills deliver smooth and effortless writing or drawing with fine, consistent lines. Designed to fit compatible retractable pens, they are easy to replace and help reduce waste, saving time on switching between pens. Color: Blue Material: Metal Package Contents: 50 × Blue replaceable pen refills Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by ±1–3 cm.