This pack of 25 Black Ballpoint Biro Pen Ink Refills with Medium Nib is perfect for those who need a smooth and consistent writing experience. These high-quality refills are 107mm/10.7cm long and suitable for various types of pens. The ink is black in colour, providing a rich and vibrant finish to your writing. These refills are ideal for both personal and professional use. They are made in the United Kingdom. Whether you are using them for business or pleasure, these refills are sure to provide a reliable and long-lasting writing experience. Get your hands on these refills today and see the difference for yourself!