The metal texture of the material is strong and durable, and will not rust and break even after many times of use, and the binding ring is designed with staggered opening and closing, which bites more tightly when closed to avoid falling items; Great for loose-leaf pages, memo filing, key rings, scrapbooking, binding recipes, photos, books, sample books, contracts or documents.Features:1. The metal ring is small and lightweight, easy to carry and put in your pocket, purse or bag.2. Closes tightly and doesn't fall apart when it collapses, keeping your books organized.3. Made of sturdy and durable metal, the multi-layer nickel-plated steel prevents rust and won't fade.Material: MetalColor: SilverPackage Content: 4 x Loose Leaf RingOutside Dia.: 56mm / 2.2Inside Dia.: 50mm / 1.9Thickness: 3mm / 0.18Net Weight: 38g