(4 Options Available)Pilot FriXion Ball Clicker 3in1 Refills(7878)- Erasable gel ink refills, with 3 refills (Black, Red, Blue) per pack.- FriXion ink is a thermosensitive ink that can be erased by rubbing. To erase, use the special rubber “eraser” tip at the top of the pen and watch the ink cleanly disappear- Rewritable-erase and rewrite repeatedly without damaging documents- Fine point 0.5mm. Writes smooth, erases clean.- Made in Japan