55-sheet quadrille pad: Includes 55 sheets of quad-ruled 5x5 graph paper in 11 x 8.5 inches . 5 squares per inch: The 5x5 grid (5 squares/inch) is ideal for note taking , technical work , and engineering drawing where you want extra detail. 3-hole punched: Pre-punched for standard binders , making it easy to store, organize, and reference your work. Thick paper, neat results: Made with thick paper to help prevent bleed-through and support double-sided use . Sturdy writing support: Features a hard, sturdy cardboard backing to keep pages stable while you write or draw. Clean tear pages: Top perforation allows for easy, clean tearing when you need to remove a sheet neatly.