Check the listing for details. 2.5" Loose Leaf Binder Rings, 60 Pcs Metal Book Rings, Silver Tone. Condition: New. Listed at 34.61 USD. The loose-leaf ring holds the paper by a ring on the paper. Book rings can be used for loose-leaf books, memo filing, key rings, DIY scrapbooking, sample holders, organizing documents, index cards, flash cards, photo album, or other loose-leaf items. O rings can also be used as creative hangers, tie storage, curtain shower, and curtain hook. Binder rings are suitable for classroom, office, home, arts and crafts.SpecificationColor: BlackMaterial: SteelSize: 45 x 39 x 3mm / 1.77 x 1.54 x 0.12 inch(OD*ID*T)Packing List: 20 x Rings for PaperAdvantage1. The ring binder clips are a buckle design, which is secure and can be firmly fixed and not easily dropped. No matter what age you are, you can easily operate the loose-leaf ring, easy to open and easy to buckle.2.