Pilot Frixion Purple Erasable 0.7mm Fine Point Roller Ball Gel Ink Pens - 6 Pack 31572 Pilot Frixion Purple Erasable 0.7mm Fine Point Roller Ball Gel Ink Pens - 6 Pack FriXion Erasable Gel Pen allows you to erase and rewrite repeatedly without damaging documents Thermosensitive, gel ink formula disappears with erasing friction of rubber plug eraser on the pen Unique, thermo-sensitive gel ink formula disappears with erasing friction Ink is thermosensitive and disappears with erasing friction