● 7mm metal crystal pen refill ballpoints offer an ultra-smooth writing experience. ● Quality Material: Our ballpoint pen refills are made of premium materials ensuring long-lasting performance. ● 3) Value Pack: With 15 pieces of ballpoint refills, you can keep writing without worrying about running out of ink. ● 4) Suitable for Various Pen Types: These refills are compatible with most ballpoint pens, making it convenient for you to use. ● 5) Easy to Replace: These ballpoint refills are easy to replace, making it simple to enjoy the same smooth writing experience every time.