Miquelrius 6 x 8 Graphite Notebook, 4-Subject, College Ruled 160 SHEETS Medium 4-Subject notebook; 320 pages (80 in each color subsection of blue, red, grey, green) Extra opaque 70gr/m2 paper; college ruled; header for titles Micoperforated pages for easy detachment; hole-punched for filing Graphite-colored Extra-hard card board laminated in plastic. Coil binding which allows the notebook to be opened flat and to make 180 degree turn