The erasable Frixion Point is a unique needle point pen that contains thermo sensitive gel ink | Precision- engineered with a tungsten carbide needle point 0.5mm ball, delivering an extra fine 0.25mm line | Perfect for those who like ultra precise writing | The heat generated by friction when rubbing the paper with the special tip turns the ink invisible | With no damage to the paper, you can erase and instantly re-write over your mistakes | Ideal for everyday use at home, work or school | Refillable with Frixion refills | NOTE: Do not use Frixion Pens on legal documents or cheques, or when writing exams