Sufficient QuantityThe pakage included 4 set Revision Cards , Each one have 80 sheets,Totall 320 sheets, The Revision Cards Are A5 sizes(6x3.5 Inch) Ruled Notepads That Feature A Wire Bound Spiral Ring,has a plastic Ring Binde , Allowing You To Easily Refer Back, Organise And Add Multiple Notes To Each Section Without Losing Sheets.Suitable For Revision, Flash Cards, Notetaking, etc Premuim-Quality Material The flashcards for revision is made of Double Sided Ruled high quality paper, durable and thicker. The paper is smooth, thick and does not penetrate ink. the ink will not pass through the second page. which means you can write on both sides without ink bleeding.Suitable for all pen's and pencils. Bined Ring DesignThe blank flash cards has a plastic Binde Ring,Standard loose-leaf design,The binding ring is easy to open and close. Ruled lines make sure you can write down words in an organised manner.which are easy to install and keep them together, convenient to hang or take down the blank cards.Perfect for revision, flash cards,quick reminders,study cards Portable SizeThe revision card book Size: 5.5 x 2.7 inches (142 x 69mm),Pocket size & designed to lie flat to make you writing easy,Suitable for outdoor activities recording and tactical pocket. Widely ApplicationOur flash cards are perfect for systematically word, formula, arithmetic learning. The study cards are good for taking notes, recording information with learning or working, you can apply them at home, school, office.