1、SPECIFICATIONS: Including 70pcs plastic binding spines, 4 hole design, with 12mm inner diameter, sufficient quantity for easy use and replacement. 2、PLASTIC MATERIAL: These binding rings are made of excellent plastic, which have light weight, wear and scratch resistant and have a long service life. 3、EASY OPERATION: Just punch the appropriate holes in the paper for manual binding, suitable for office, school or home use, convenient and practical. 4、GOOD PERFORMANCE: These binding spines have good surface gloss, strong adhesion, not easy to break or fade, easily bind paper and store for a long time. 5、7 DIFFERENT COLORS: These plastic binding rings come in different transparent colors for easy identification and are used in a variety of DIY binding projects. 10 x Transparent Color Binding Rings10 x Transparent Pink Binding Rings10 x Transparent Black Binding Rings10 x Transparent Orange Binding Rings10 x Transparent Blue Binding Rings10 x Transparent Green Binding Rings10 x Transparent Purple Binding Rings Item Type: 4 Hole Binding RingsInner Diameter: Approx. 12mm / 0.5inUses: Stationery accessories binding consumables