Rediform Engineering and Science Notebook - Letter

60 Sheets - Wire Bound - Both Side Ruling Surface - Light Blue Margin - 16 lb Basis Weight - Letter - 8 1/2" x 11" Sheet Size - White Paper - White Cover - Unpunched, Heavyweight, Hard Cover - 1 Each. Wirebound, with a rigid cover to protect work. College-ruled with a margin on one side and 10 x 10 quad-ruled on the other side.