Mae: The length of the ballpoint pen refill about 9.9cm, 1.0mm medium point for smooth writing. . Package includes: 15 x blue ballpoint pen refills, 15 x black ballpoint pen refills, a large amount of ballpoint pen refills are enough for your use. You can share with classmates or friends. . Smooth writing: The body of the ballpoint pen refills is made of metal, lightweight but durable. Smooth writing with an even flow of ink, ink dries quickly and does not fade through. It is also a left-handed pen friendly refills. . Favorable choice: These ballpoint pen refills are compatible with most ballpoint pens. It is a great refill for Montefiore pens, Parker pens, Parker writing pens, TG pens, Tactical pens, Kate Spade pens. Extend the life of your favorite expensive pen. . Suitable for different writing options: Metal ballpoint pen refill is suitable for office, shop, school and home etc. Small and portable, convenient to carry. Please note: There is a stick of wax to keep the ink on the tip. Please take them off before use. .