Our black ballpoint pen refills are specifically designed for use in metal pens, offering a and efficient writing solution. These refills are practical for office environments where consistent and reliable performance is essential. To replace the refill, simply unscrew the pen, remove the old refill, and insert the new one, ensuring your pen is ready for immediate use. Features -Color:Black -Material:Metal -Size:11.60X0.53X0.53cm/4.56X0.21X0.21in -Sturdy metal design: the metal construction of these pen refills keeps durability and a lightweight feel, making them a reliable choice for everyday use. -Seamless writing: experience smooth and consistent ink flow with these refills, featuring quickdrying ink to prevent any smudging or blotting. -Broad compatibility: these refills are designed to be compatible with a wide range of ballpoint pens, offering flexibility and convenience. -Multienvironment use: suitable for various settings including offices, schools, businesses, and homes, these refills meet all your writing requirements. -Great for sharing: practical for individual use or sharing with others, these pen refills provide a dependable writing solution for everyone Package list: 50pcs x ballpoint pen refills