Pilot FriXion Ball Erasable Gel Rollerball Pen 1.0mm Tip 0.5mm Line Black (Pack 12) The original erasable rollerball pen, now available in a BROAD tip for a thicker line width! Write, erase and re-write your notes everyday with the Pilot FriXion. Simply rub out your mistakes with the eraser stud and watch the ink disappear as if by magic! The unique gel ink responds to the heat generated by the rubbing out, and lets you write over your mistake immediately with the same pen. Did you know? You can reduce plastic waste and also save money with refills for your FRIXION pen when the ink runs out, instead of buying an entire new pen - it's never been easier to be green! 1.0mm tip gives a 0.5mm broad line.