The original Pilot FriXion Ball - NEVER cross out again with the Pilot FriXion, the erasable pen from Pilot! This unique product allows you to cleanly erase, delete (Frixion it) and rewrite - all with the same pen. Simply remove your mistakes by rubbing with the eraser stud and watch the ink disappear as if by magic! The unique gel ink responds to the heat generated by the eraser stud. The FriXion Ball features a 0.7mm tip giving a smooth medium line.