Built-in cover to protect documents Adjustable thickness with string
Standard: A4-S / Model Number: FL-012TU
External dimensions: 12.0 x 8.7 inches (307 x 220 mm)
Hole spacing: 3.1 inches (80 mm) / Number of holes: 2 holes
Cover Core Material: Recycled paper pulp formula, Cover Exterior: spine and square cloth, Cover: paper cloth paste