Package includes: 8 sets index cards in 8 different colors, 50 sheets for every color, 400 pages in total; Size: 5.5 * 9 cm/ 2.2 * 3.5 inches, proper size for you carrying Binder ring: comes with 8 pieces stainless steel bender rings, which are easy to install and keep them together, convenient to hang or take down the cards 8 Different colors: white, pink, purple, blue, yellow, green, brown, orange, you can make special mark according to their different colors, easily sort cards by subject or class 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 Notepad memo scratch pads for outdoor activities recording and tactical pocket Specification Material: Natural wood pulpe Size: 5.5 * 9 cm/ 2.2 * 3.5 inches Quantity: 8 models, 50 sheets per model 8 Sets Package included: 400 * Study cards 8 * Binder ring