•Package Content: Included 12 pack binder rings, with an inner diameter of 44mm/1.73 inches, an outer diameter of 50mm/1.96 inches, and a thickness of 3mm/0.11 inches. The quantity is sufficient for daily use
•Premium Material: Book rings are made of premium metal material, with a smooth surface. Loose leaf binder rings are durable and unbreakable, allowing for long-term use
•Easy to Use: Paper rings have a tight locking design, making them easy to open, and ensuring that they stay closed tightly to lock the files firmly
•Portable: Flash cards rings are compact and lightweight, making them easy to carry. Whether you're on a business trip or in the office, you can securely bind documents quickly and easily