Binder rings 3 inch - standard size book rings clips inner diameter 3 Inch, hold up to 175 sheets of 20 lb. paper - includes 10 pieces loose leaf binder rings. Durable quality 3 inch binder rings - made of durable and top-grade anti-rust nickel plated metal binder rings, they won't crack, break, or fade even with continued use. Easy to open binder rings - used by professionals and students, these handy loose leaf paper rings are easy to use. smoothest open and close small binder rings makes adding and removing papers a breeze. Multi-function index card rings - flash card rings are great for organizing documents, scrapbooking, recipes, key ring holder, can be used as flashcard rings and ring clips for index cards. Book rings 3 inch - great to use for office supplies, kids school projects, filling papers, creating notebook rings and for all home organization and projects! Binder rings 2 1/2 inch includes 25 pack of metal rings which are heavy duty, steel and made of anti-rust nickel plated material. index card ring can be used for many at home, office and school projects and organization, binder rings for paper, creating notebooks, filling papers, organizing documents, scrapbooking, recipes, and key ring holder. binding rings is also the perfect size rings for flash cards and index cards! Easy to open and close design is the perfect nickel plated loose leaf ring for kids and adults to use. It is also the perfect size ring document for loose leaf papers and to ring booklet!