Black bold marking ink that completely removes with the heat and friction tip with no residue. Great for marking patterns and lines. No smudging or fading. Fine Point 0.7mm. Writes Smooth, Erases Clean. Erase and rewrite repeatedly without damaging documents. No wear or tear! Unique thermo-sensitive gel ink formula disappears with erasing friction. Erasable Gel Ink pen in Black , Blue, Red, Lime Green, Purple, Pink, Orange.