Size information: the length of the metal pen refill is 4.5 inch/ 11.6 cm, 1.0 mm medium point for smooth writing; Please check the size before purchasingQuality material: the body of ballpoint pen refill is made of metal material, durable and reliable, the ink provides a consistent flow of writing on paper, and will dry quickly, can serve you for a long time, bring you nice using experiencePackage includes: you will get 36 pieces of cross ballpoint pen refills, they are all black ink, come with a clear plastic pencil case; Sufficient quantity and nice combination can meet your use and replacement, and you can share them with your friends or classmatesWide range of application: these metal ballpoint pen refills are suitable for office, business, school, home, etc.; Small and portable, convenient to carryEnjoy writing: the black pen refill is suitable for having class, travel, meeting, taking notes and so on; The quality black ink is bold and vibrant, the medium tip of the ballpoint glides across paper in an easy, smooth, and attractive manner 36 pieces cross compatible pen refills metal ballpoint pen refills 1.0 mm black ink pen refills with clear plastic pen box for home, office, school, stationery supplies Features: Multiple usages:These black pen refill is suitable for having class, travel, meeting, taking notes and so on, can be applied in office, business, school, home, etc Nice gifts: Adopting quality material,These cross compatible pen refills are appropriate for most ballpoint pens, they can be regarded as practical gifts for friends, classmates, colleagues and more. Specifications : Quantity: 37 pieces Color: black ink Midpoint: 1.0 mm Length: 4.56 inches / 11.6 cm Box size: 12.5 x 6.5 x 2.5 cm/ 4.92 x 2.56 x 0.98 inch Package includes: 36 x Ballpoint pen refill 1 x Package box