PILOT Frixion Ball 3 Slim Ballpoint Dark Silver PLKFBS60EFDS 3-Color Pen, 0.5mm,

[Erasable by rubbing]: Equipped with Frixion ink that erases with friction heat. After the ink dries, rub it with the rubber on the back of the pen to erase the color. [No eraser residue & rewriteable]: No eraser residue is produced, and you can rewrite over the erased area as many times as you like. 【0.5mm 3-Color Ink】: Use black, red, and blue inks in one pen. The 0.5mm tip is convenient for writing in notebooks and documents. [Refill Compatible]: Compatible with Frixion multi-color refills (LFBTRF30EF). You can replace the refill when the ink runs out and use it for a long time. [Precautions for use]: Do not use on documents, addresses, or anything that should not be erased. Do not place in direct sunlight or in places with high temperatures.