This is a set of 12 Better Office quad-ruled composition books with four different-colored covers, three each of blue, red, purple, and green. Each book contains 80 sheets sewn to the book’s spine to provide 160 total pages per book. With four squares per linear inch, these books are perfect for mathematics and plotting quadratic equations. They are a favorite of math teachers and those who want a sturdy mid-size journal they can easily carry in a purse, backpack, or briefcase. Composition notebooks great for note-taking in class or at home 12 notebooks per pack Each notebook contains 80 sheets measuring 7.5″ x 9.5″ Graph-ruled with four squares per linear inch Sturdy hardcovers come in four assorted colors: red, blue, purple, and green Pages are thread-bound for extra strength Front cover’s interior side has a class schedule grid and call-outs for name, date, school, and more Inside of the back cover includes useful information, such as a standard to metric conversion table for linear measurements, volume, and multiplication tables Specifications table Attribute name Attribute value features Spiral Bound No Page Divider Pocket No Perforation No Acid Free Actual manufacturer name for the color of the product. Assorted Colors Type of Cover 80 Color Family The number of divided sections that are built into the notebook. 1-Subject Notebook Type Rule type refers to the line style and spacing distance between lines on lined (or ruled) paper. Graph weights & size Sheet Length (Inches) Paper measurements in inches (Width x Length) 7.5″ x 9.75″ Sheet Width (Inches) Tape Selling Quantity (UOM) Paperboard Selling Quantity How many total packs, boxes, etc. come with the purchase 1