The Unique Spotlight With Innovative Special Frixon Ink. The Ink Colour Is Erasable By Friction With A Rubber On The Tail. Frixion Light Is Reqritable By Using The Same Pen, On The Same Spot. Erasing Temperature Is Around 60 0 C And Recovering Temperature Is Around -10 0 C.Tip Dimension: 4.0Mm,Ink Type: Water Based, Metamo Ink(Thermo-Sensitive, Colour-Change Ink) Width Of Stroke: 3.3Mm(Max),Write-Out Distance: 50 M ,Ink Color: Pink,Yellow & Green.