The OEM Tops 4 Square/Inch Quadrille Pad features 50 sheets of heavyweight, 20 lb. white bond paper ruled with 4 squares per inch. This precision ruling is created with a special nonrepro blue ink, ensuring professional-looking results. The glue-top construction allows for clean sheet removal, preventing any loose sheets from getting lost. Each pad is letter-sized and includes a 27 point chipboard backer for added writing support.