TOPS Quadrille Pad, 8.5 x 11 Inches, 15 Pound Stock, 50 Sheets per Pad, 6 Pads per Pack, White (99522) Graph pads provide scale and structure for technical drawings Glue-top pad has 4 x 4 ruled front, 5 x 5 ruled back Essential for artists, architects, engineers and students 8-1/2" x 11", 50 Sheets, 6 pack Proudly made in the USA