30 Pieces metal ballpoint pen refills medium point pen refills replacement, (15 pieces black ink, 15 pieces blue ink) Good quality ink: Smooth writing ink with medium 1.0 mm ballpoint tip, provides fluent and clear writing that not drags. 2 Colors for you to choose: Comes with black, blue ink for you to choose, each color for 15 pieces, enough for your writing. Compatibility: The ballpoint pen refill length is approx. 3.9 inch/ 9.9 cm, fits most ballpoint pens that utilize the same refill. Widely usage: Suitable for office, business, school and home, etc.; Lightweight and save space, very convenient to carry around. Specifications: Material: metal Medium point: 1.0 mm Ink color: black, blue Length: 3.9 inch/ 9.9 cm Package includes: 15 x Black ballpoint pen refills 15 x Blue ballpoint pen refills Warm note: Please check your refill style to ensure these refills fit your ballpoint pen before ordering.