Pilot Frixion is the Market Leading Erasable Rollerball Pen This showcase listing of 6 great colours: BLACK, BLUE, RED, GREEN, VIOLET AND LIGHT BLUE Medium Tip 0.7mm Writing Width 0.35mm Write, Delete (FriXion IT!) and Rewrite as many times as you like – that's the beauty of Pilot FriXion pens! But just how can ink seemingly be written and then effortlessly removed without trace? Well, with FriXion's exclusive thermo-sensitive ink technology, mistakes can be corrected with ease using the integrated FriXion eraser tip which works in the same way as a regular pencil eraser. No mess, no dust, no paper damage and completely ‘erased’ lines. Re-write over using the same pen! Thermosensitive ink - Good to know... If exposed to excessive heat conditions, FriXion ink can become .