Package content: It includes 100pcs key rings with chain and 50Pcs open jump rings, separate packaging. The key ring design is easy to install to make your DIY project simple. Size: Ring diameter Approximately 1 inch/25mm, total length about 2.1 inch/54mm; With these high quality metal parts, you can create your own key chains to give as gifts, sell or promote your company or organization. Durable material: Made of high quality silver-toned nickel metal, strong and durable, simple. Great workmanship with the ring, smooth surface and edge, will not scratch your hands and stuffs. Sutable for DIY: You do not need to buy additional parts.You can use your imagination to DIY your own keychain, make for phone, bag, purse, and other accesspries. Easy to use: Each key ring chain comes with a separate jump ring, you can attach pendant, tags and other small accessories easily. you don't have to put extra effort to open before connect something on it.