PILOT Refill, BLS-FR7 Red Ink 06pcs combo, for Frixion and Frixion Clicker Roller-Ball Pen, Ball Pen Refill  (Pack of 6, Ink Color - Blue)

Extend the life of your PILOT FriXion! Just replace the rod - it will save not only money, but also the ecological resources of the planet. ||| Replaceable rod with innovative ink, the composition of which the company Pilot has developed for several years. It was created specifically for pens series Frixion ("write-erase"). The ink is discolored by friction of a special cap at the end of the pen. In the composition there are no solvents and other chemicals with a pungent smell. The core has a stainless steel needle writing unit and a tungsten carbide ball.