These nickel-plated steel binder rings measure 1.25" in diameter and are extremely versatile. WIth an easy to use, yet strong hinge, opening and closing these snap rings allow them to be utilized in a variety of ways. Most commonly referred to as Binder Rings, Loose Leaf Paper Binder Rings, or Book Rings, they are incredibly popular for creating binders or as metal book rings, binding rings, Keychain Key Rings, Index Card Rings, Flashcard Rings, and Paper Rings. In addition to all of the aforementioned uses, these binder rings are also known as Snap Rings or O Rings and used in retail stores. They're great for hanging sample books, catalogs, instruction booklets and other product-related materials. They can also be commonly found in supermarkets, big box stores, and other retail stores displaying price tags and POS signage. They also provide a cost-efficient alternative for hanging displays and signs. Lastly, these metal snap rings have become increasingly popular for crafts, key rings, DIY projects, and craft shows. We also offer other size binder rings such as 1", 1.5", and 3".