1. You can make special mark according to their different colors, easily sort cards by subject or class, Assorted 8 Colors.
2. Binder ring: comes with stainless steel bender rings, which are easy to install and keep them together, convenient to hang or take down the cards.
3. Wide application: these flip index cards are good for taking notes, studying or working, you can apply them at home, school, office or any other places.
