The package includes: You will get 12 pieces 3 ring loose leaf book ring binders, enough quantity for you to make multiple notebooks and share with families or friends. Suitable for most books and albums: each metal loose-leaf binder is about 4cm x 2cm and the inside diameter is 1.95cm, suitable size for most books or albums, easy to meet your needs. Durable Design: The round metal rings can be split into two halves and are held together by a metal swivel rivet in the center of the ring, tight and durable. Better Organize: Binder Rings to 3 rings are good for holding punched memory cards, paper documents, albums, invoices, samples, memorial book. drawing book, etc. Wide uses: These metal loose-leaf binders can be easily extended and closed, flexible for you to DIY travel diary, photo album, scrap booking, loose-leaf notebook and alumni book. >