Assorted sizes: Comes with 60 loose-leaf book rings, 3 different sizes, enough for your spare or replacement. . Durable material: All keychains are made of nickel plated steel, hard and sturdy, not easy to break, you can use them for a long time. . Wide Application: The book binders lock securely and are ideal for securing stacks of documents, paper maps, name tags, keys and samples, loose sheets, memos, keyrings, sample racks, etc. . Easy to use: The metal steel rings can be split into two halves and are held together by a pivoting metal rivet in the center of the ring. Just pull to open and squeeze to close. . Sufficient quantity: 60 book bindings are available, enough for the office and the daily life. . About shlpping: All items will be shlpped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.