Sterling Silver: These open jump rings are made of 925 sterling silver. With this kind of material, you can add them into projects that need high strength toughness. They work well as connector. Very Useful: They can help you finish many projects if you need. You can use them as DIY jewelry making, as connector for necklace and bracelet repairment. They can also add charm to these projects. 3 Sizes: You can receive 30pcs open jump ring in 3 size. The sizes are 3.5mm/4.5mm/6mm . Kinds of size can meet your various needs for jewelry finding and crafts repairment. They are enough to finish any projects. Last-long Time Shiny: These jump rings are made of 925 silver, which is excellent in glossiness. You can add to your necelace, bracelet and other DIY jewelry, and your jewelry become more impressive. Pefect Gift: Open jump rings can use in jewelry making. You can make handmade DIY jewelry by yourself for your family and friends on important date, such as necklace, keychain, earring and so on. Description UNICRAFTALE 30Pcs 3 Sizes 925 Sterling Silver Oval Jump Rings Circle Clasp Connecting Jump Rings O Shaped Jump Ring Connectors Metal Unsoldered Rings for Necklace Bracelet Making Jewelry Repair Material: Sterling Silver Color: Silver Quantity: 30pcs Size: about 18-21 gauge, 0.7-1mm thick