Erase the fear of making mistakes, with the Koala erasable gel pen! Using its Red heat-sensitive ink, you can erase any mistakes by simply rubbing them with the plastic sphere set at the end of the pen. The sphere is not subject to wear like normal erasures, doesn't ruin the surface it is used on and erases flawlessly. The tip of the pen has a diameter of 0.7 mm and a nib of 0.35 mm, this attractive pen is perfect for all kinds of uses, at school, in the office and during leisure time. Easy glide.