Wirebound notebook is perfect for use in labs, science classes and more. Paper features both a white original sheet and yellow copy sheet that are printed with a 4" x 4" graph layout. Sets are consecutively numbered from 1 to 50 for quick reference. Included sheets of carbon paper can be removed and placed between the white and canary sheets. Front cover is made from durable, 20 point material to protect the interior pages from damage. Wire ends are coil-locked for snag-proof performance.