Product Description: The binding device can be detached, and if the cover becomes damaged, it can be replaced with a new cover sold separately. The cover with the binding can be reused as a file for stored documents. No need to rewrite the title. The documents can be removed and removed from either the left or right side, so you can file new information from one side and discard old information in order from the other. Cover/PP film pasting; 2 holes; Closing hole spacing: 3.1 inches (80 mm) pitch Product specifications: Size: A4-S; Capacity: 50; Capacity: 500; External dimensions (height, width, back width): 12.0 inches (307, 246, 65; Number of holes: 2 holes; Eyelets: 3.1 inches (80 mm) pitch Material: Cover Material: PP film pasted paper pulp formula) Back Specifications: Replacement back. Paper type; Accessories: 1 index, color divider card (5 threads, 1 pair); Product color/blue; Number of holes: 2 holes; Binding hole spacing: 3.1 inches (80 mm) pitch; Cover: PP film pasted (core material: old paper pulp blend); Replacement back; Index x 1, color divider card (5 threads, 1 pair); Recycled material composit/Core material: old paper pulp formula: old paper pulp Ratio: 100%