These Esselte Ampad Basic Perforated Writing Pads are useful for a variety of purposes. They come equipped with a sturdy chipboard backing for writing support. The dark blue header strip connects each set of 50 pages together with strong staples. It is ideal for hoe or classrooms. The Ampad writing pads contain quality yellow legal-sized perforated pages that separate cleanly. Each of the wide-ruled sheets has 11/32 line spacings and a 1-1/4 left margin.