Ampad® Double-Sheet Graph Pads have twice the sheets of ordinary pads with double-sided 4 x 4 rulings and matching headtapes. Micro perforated pages detach easily. An extra-strong back provides firm writing support. Pocket-Sized Indicator: N; Pad-Binding Type: Stapled; Pad-Binding Details: Heavy-Duty Staples; Pad-Binding Edge: Top.