100Pcs 20-35mm Silver Metal Loose Leaf Book Binder Hinged Rings Keychain Album Scrapbook Craft Open Rings Office Binder Hoops 100% Brand New and high quality. Material:Alloy Color:as picture Package: 1pc Size:20mm:Inner diameter: 1.5cm, outer diameter: 2cm25mm:Inner diameter: 2cm, outer diameter: 2.5cm30mm:Inner diameter: 2.5cm, outer diameter: 3cm35mm:Inner diameter: 3cm, outer diameter: 3.5cm Feature: 1.Premium quality metal split rings. These loose-leaf binder rings for books are made from nickel-plated metal, not easy to deform or break, and can withstand long term use.2.Multiple sizes available. 20mm, 25mm, 30mm, 35mm,book rings. Aorted sizes metal rings can meet your different using needs.3.Easy to open or close. The steel metal round ring is held together by a central swivel rivet, convenient to pull to open and squeeze to close, you can use them easily and quickly. Closed tight and let your books organized.4.Widely used. The books binder hinged rings are ideal for loose-leaf, memo, paper cards, scrapbooking, binding recipe, DIY projects or other loose-leaf items. Conversion: 1inch=2.54cm, 1cm=0.393inches Warm Tip : Please be reminded that due lighting effects, monitor\'s brightne/contrast settings etc,there could be some slight differences in the colour tone of the website\'s photo and the actual item.Item Measure by hand, it could be 1cm different,your kind understanding will be much appreciated.