Enhance your writing tools with our pen refills, designed to fit a variety of ballpoint pens. The sleek design and high-performance ink make these refills ideal for everyday use in the office or at school. Enjoy the convenience of having reliable and ink . Features -Color:Black -Material:Refill -Size:10.00X0.20X0.20cm/3.93X0.08X0.08in -Precision writing: the 0.7 mm fine tip offers precise and smooth writing, boosting productivity in the office -Userfriendly design: the retractable mechanism provides effortless operation, ideal for prolonged writing without strain -Reliable ink flow: the ballpoint pen refills ensure steady ink flow, preventing smudges and keeping your work neat -Replaceable solution: replaceable pen refills are easy to change, reducing waste and offering practical utility -Wide range of uses: suitable for multiple office activities such as signing, notetaking, and drawing, fulfilling various needs Package list: 300 x ballpoint pen refill