Ampad Gold Fibre Premium Quad Ruled Pad - 80 Sheets - Wire Bound - Both Side Ruling Surface - 20 lb Basis Weight - 8 1/2" x 11 3/4" - White Paper - Classic Green Cover - Micro Perforated, Chipboard Ideal for scale drawings Pages are quad-ruled with 4 squares per inch on the front Microperforated sheets for clean, easy removal every time Hard cover with rigid back for mobile use Narrow-ruled back