[What You can Receive] 600-count pack of colored index cards, 100 sheets for each color,600 pages in total,12 pieces of kraft cover pages included for easy organization,6 pieces of metal binding rings,convenient to carry in [Size and Color] Revision flash cards are 127 x 76 mm/4.9 x 2.9 inch,compact, portable and pocket-size. You can put it in your coat pocket or backpack, jeans pocket, purse, and tote,easily accessible when Flash cards come Random Color and cannot be specified. [Practical Tools] Our revision cards are made of thick, , wrinkle-resistant, smooth paper, perfect for writing. Each piece of paper is ruled for easy and organized note-taking.Meanwhile, each pack of index cards is protected by two sheets of tough brown kraft paper, which is not easy to be damaged or wrinkled, and can be used for a long time. [Easy to Carry] The flash cards are exquisite and compact, easy to carry when going out, does not take up space. Index cards have rounded corners to keep your fingers from scratched. The provided binder rings can string together for easy storage and organization. [Widely Multiuse] These cue cards are great for studying, taking notes, making lists and more. Double-sided blank flash cards can be used notes, message notes, word marks, list cards, location address cards, bookmark tags, listing cards, name cards, craft labels, gift tags, etc. Colour:Random Color(Note: The color is random and no specification is accepted.) Material:Paper Size:12.7x7.6cm Package Contents: 600 * Flash Cards Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.