This is an OEM Cardinal Write 'n Erase Tab Divider set, featuring 5 tabs that allow for easy labeling with any pen, pencil, or nonpermanent marker. The special Mylar laminating enables the tabs to be erased and reused, providing a practical solution for organizing your letter-size documents. These dividers help you create an instant index without the hassle of typing or inserting tabs, making document management more efficient.