ITEM NAME:9 x hinge leaves ring ring paper ring diameter key ring D9C9 9 x hinge leaves ring ring paper ring diameter key ring D9C9 Material: Metal Color: Silver Diameter (approx): 24 mm Inside diameter: 20 mm Thickness (approx.): 2.5 mm / 0.1 Net weight: 21 g Product name: loose-leaf ring Pull to open and push it close Open to the punch material and maintain these binder rings. Loose-leaf book, memo filing, key holder, scrap booking, sample holder or other loose-leaf products. Package content: 9 x loose-leaf ring Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.