Narrow pads offer a distance of 1/4 inch between lines and legal or wide control pads offer a distance of 11/32 inches. Double lines mark the left margin. Notepads offer 50 standard 16-book sheets of paper in different colors, letter or note size notepads and narrow or legal/wide rulers. The strong cardboard spine of the writing block provides structure and a sturdy writing surface for taking notes on the go. To remove a sheet of paper from the block, simply slide it along the top perforated edge to ensure clean cracks without messy tearing.