Our metal ballpoint pen refills are designed to provide a smooth and consistent writing experience for your twist pens and metal pens. Ideal for office use, these black ink refills ensure that your writing is and . Simply remove the old refill from your pen and replace it with our sturdy metal refill to continue enjoying a seamless writing experience. Features -Color:Black -Material:Metal -Size:11.60X0.53X0.53cm/4.56X0.21X0.21in - metal construction: the pen refills are made from sturdy metal, ensuring a lightweight yet writing experience that stands the test of time -Smooth writing experience: enjoy a seamless writing experience with quickdrying ink that prevents smudging, making it practical for and personal use -Wide compatibility: these refills are compatible with a variety of ballpoint pens, making them a versatile choice for any pen collection -Ideal for multiple settings: suitable for office, business, school, and home use, these refills are practical for any writing task you encounter -Practical for sharing: whether for personal use or sharing with friends, these pen refills offer convenience and reliability for everyone Package list: 4 pcs x 50pcs x ballpoint pen refills