What you get: Package contains 50 pieces of blue replaceable pen refills, each measures 3.9 inches / 9.9 cm in length, 1.0 mm medium point for smooth writing; A large quantity of pen refills is sufficient for daily use. Wide applications: The medium point metal refill is suitable for various scenarios, such as office, business, classroom, school, home, and shops. Quality material: The outer shell of the retractable pen refill is made of durable metal, and the inner ink is formulated for consistent flow and vibrant color rendering, 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 without leakage concerns; Its pocket-friendly size allows for easy storage and is ideal for travel and business use. Nice performance: The replaceable blue ink refills feature a 1.0 mm tip, enabling smooth and effortless writing or drawing of fine lines on paper; Compatible with retractable pens, easy to replace, and designed for practical use. Color: Blue Material: Metal Package Contents: 50 x Blue replaceable pen refills Only the above package content is included. Note: Light and display differences may cause slight variation in color between the image and the actual item. Measurement may vary by +/- 1–3 cm.