Rediform Engineering and Science Notebook - Letter - 60 Sheets - Wire Bound - Both Side Ruling Surface Light Blue Margin - 16 lb Basis Weight - 8 1/2" x 11" - White Paper - White Cover - Unpunched, Heavyweight, Hard Cover - 1 Each Engineering and Science Notebook contains 60 letter-size sheets of white paper. Each sheet is college-ruled with a margin on one side and 10 x 10 quad ruled on the other side. Wirebound notebook has a rigid cover to protect your work.