These plastic binder rings are flexible and tough, making them perfect for organizing loose leaves, cards, and notebooks. Available in 6 colors and 4 sizes, the double buckle design ensures they won't come loose. Use them for scrapbooking, key rings, or any other loose-leaf items. This package includes 50 rings. Features: 1. Made of high-quality plastic, flexible, high toughness, not easy to be broken, durable to use. 2. Practical and useful tools can make your loose leaves organized. Suitable for binding and storage of cards, loose-leaf books, etc. 3. Size: Inner Diameter: 15mm, 20mm, 28mm, 40mm optional. Double buckle design is stronger, easy to buckle and not easy to loose. 4. Used for the loose-leaf books, key rings, notebooks, scrapbooking, or other loose-leaf items. 5. Package included: 50 x Loose Leaf Rings. Color: Pink, Red, Yellow, Green, Blue, Multicolor optional. Specification: Material: Plastic Color: Pink, Red, Yellow, Green, Blue, Multicolor Product Size: Inner Diameter: 15mm, 20mm, 28mm, 40mm Product Weight: 25g, 37g, 64g, 125g Package Included: 50 x DIY Binder Ring