Description Frixion Point 0.4 is a Frixion-series roller ball pen with a needle-shaped, ultra-fine point. The revolutionary “Frixion” ink is a thermo-sensitive gel ink. The color of the ink becomes colorless (“disappears”) due to the heat generated by friction when rubbing the rubber tail plug of the pen on the paper. The writing is erased without debris. Frixion-series pens can write repeatedly on the same spot with the same pen. NOTICE – As with any non-permanent or erasable writing instrument, do not use on legal or official documents. – Frixion ink becomes colorless (becomes “erased”) upon reaching 60℃. To restore color, cool to -10℃ in freezer. Restored writing may be smudged and fainter than the original writing. SPECIFICATIONS Brand: Pilot Product Code: BL-FRP4 Type: Roller ball pen Ink: Water-based gel (Thermo-sensitive) Tip: Stainless steel pipe Ball Diameter: 0.4mm Width of Stroke: 0.20mm Weight: 9.6g Refill: BLS-FRP4