This is an ink refill to replenish the ink in your favorite pen.
The FriXion Ball Knock pen has a 0.5mm tip, easy for creating detailed annotations and diagrams, while also being great for smooth everyday writing. The FriXion Ball features 4 fully retractable nibs, activated by pushing down the clip of your desired color at the top of the pen. However, the real advantage of the FriXion pen is its disappearing ink, for all the perfectionists among us. We all make mistakes but the FriXion ink allows you to erase them by using the eraser at the tip of the pen without damaging your documents.
- [Pen Dimensions]: Approx. 14.5cm long
- [Colors]: Blue, Black, Green, Red
- [Nib Size]: 0.5mm