The Daeheung Laminated 3-Hole D-Ring Binder is an office supply designed for systematic organization of A4 documents. With a 5cm spine width, it can securely store a large volume of documents, and the D-ring mechanism makes it easy to flip through or replace pages. This durable Korean-made binder features a clean blue exterior, perfect for maintaining an organized office environment. It is ideal for offices or academies that frequently need to sort and store documents.