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QUAD-RULED – Set of four 9-3/4 x 7-1/2 inch thread-bound, wireless 80 sheet/160 page, quadrille 4 x 4 graph paper composition books with 4 squares per linear inch, perfect for plotting math equations and creating graphs.
DURABLE – Sturdy hardcovers, front and back, with black covers; pages are thread-bound for extra strength

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Stable & sturdy construction: Expanding file folder is made from durable wipe-clean polypropylene. Acid-free and high-quality for using trustingly. Waterproof & sturdy enough to keep the file organizer from collapsing. The accordion folder’s cord closure and adjustable flap provide additional security. Built-in file separation layers are flexible to ensure the files don’t wrinkle.
Handy organization & Easy lookup: Expandable file folder has 24 pockets designed for keeping our paperwork organized. Accurately classified storage in the specific color slot and labeled with tabs, so it is easier to find the papers what is needed.