PILOT Frixion BL FR7 Erasable Rollerball Pen Set 0.7mm Tip Assorted Colours 10 Pens

1 x Purple, 1 x Brown, 1 x Light Blue, 1 x Pink, 1 x Lime Green Frixion pens have temperature-sensitive ink that changes colour when heated. By rubbing the pen cap on the ink, enough heat is generated which makes the ink colourless. The 0.7mm nibs of the rollerball pens have a 0.5mm line width.