Wonderful handy tool for you to organize your keys in loop. Design with clip closure, easy structure and convenient to use. You can use it in your home or office, not only as a book ring, but also as a keychain or other item holder.Features:1. Book rings are convenient for hanging and organizing a variety of items such as papers, documents, and keys.2. The book ring is made of metal material, sturdy and durable, not easy to deform or damage.3. These book rings allow you to use them in your home or office to secure and keep keys, key chains.Material: MetalMain Color: Silver ToneInner Diameter: 4cm /1.6Outer Diameter: 4.5cm/1.8Net Weight: 37gPackage: 5 x Key Rings