Check the listing for details. 30 Pcs Locking Jump Rings 5.5/7.5/10mm Round Twist Clasp Silver. Condition: New. Listed at 12.80 USD. What is this?These open-end rings are suitable for DIY crafts, jewelry making, necklaces, bracelets, anklets, earrings, and other projects. They can be used as accessories to connect pendants and keychains, and can be hung on backpacks, handbags, belts, and wallets. They are a unique choice for DIY craft enthusiasts and jewelry making beginners.What will I get?Color: SilverMaterial: CopperWidth: 5.5/7.5/10mmWire Diameter: 1.3mm/0.05 inch,1.3mm/0.05 inch,1.5mm/0.06 inchPacking List: 30 Pcs x Locking Jump RingsAre there any advantages of this product?The lock open rings are made of copper with an electroplated finish, giving them a bright, fade-resistant appearance. They are safe, reliable, and durable for long-term wear.The open rings feature a unique safety lock design.