Each box carries 12 units, so you always have plenty in stock when one of them runs out of ink. These highlighters are versatile as they work on standard, copy and fax papers. The bright orange smart highlighter ensures what you have underlined and marked is clear and legible, thus making it easy to read. It comes with a chiselled tip to eliminate blind spots so you can see what you are highlighting as you mark for straighter lines, which ensures precise highlighting. The ink dries up quickly on the paper, thus preventing smearing, which is a common issue among markers. You can safely highlight written notes, faxes, copies, newspapers and more.