Check the listing for details. 1.8" OD 1.4" ID Loose Leaf Rings Binder Ring Plastic Book O Rings, Blue 100pcs. Condition: New. Listed at 18.75 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: BlueMaterial: PlasticSize: 45 x 35 x 4.7mm / 1.77 x 1.38 x 0.19 inch(OD*ID*T)Packing List: 100 x Loose Leaf RingsAdvantage1. The clip ring is a double-buckle design, which is more 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.