Durable material: Made of super strong silver nickel metal, strong and durable. Color: silver. The ring is well-made, with smooth surface and edges, and will not scratch your hands and things.Size: The inner diameter of the ring is 1.25 inches/32 mm.Package content: including 50 binding rings. It's great to get bulk commodities at reasonable prices.Easy to use: pull open, squeeze to close; dislocation occurs after opening, because the binding ring itself does not use springs or other elastic devices to make the bite tighter after closing.Ideal for DIY: the binder ring can be used for loose-leaf books, paper cards, keychains, scrapbooks, creating handmade diaries, DIY projects, or other loose-leaf projects.