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 retail environments. These refills can also be used as practical gifts for friends, family, children, and students. Quality material: The outer shell of the retractable pen refill is made of durable metal, providing strength and reliability. The inner ink is formulated for high color rendering and consistent flow, enabling smooth writing and drawing performance on paper. Convenient to use: These ballpoint pen refills are compact and portable, easy to carry in pockets or bags without concerns about ink leakage. Their pocket-friendly size makes them ideal for travel, commuting, or business trips. Nice performance: The 1.0 mm tip delivers consistent, fine lines with smooth ink flow, allowing effortless writing and drawing. Designed to fit retractable pen barrels, these refills are easy to install and help reduce waste by extending the life of the pen. 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.