Features: Premium material: Ceramic kiln wire is made of high temperature nickel-chromium wire, which is resistant to high temperatures up to 2100 degrees Fahrenheit and retains its strength after high heat. Size: The U-hook is thick enough to withstand general weight hanging ornaments, the nichrome wire is 21 gauge/0.7 mm in diameter and the U-hook measures 1.8 x 0.7 cm. Easy to use: The already cut and bent U-hooks save a lot of time, are of uniform size and the right shape, and are very easy to use. Easy access and storage: The product includes a plastic storage box for easy access and storage. Scope of application: Can be applied to handicrafts, insert the u-shaped wire into clay and molten glass to make it a hanging loop for your ceramic jewelry, pendants, jewelry, etc. Specification: Color: silver Material: Nichrome Package weight: 50pcs:9g ; 80pcs:12g ; 120pcs:18g ; 160pcs:25g ; 200pcs:32g Package size: 6.8 * 5.2 * 1.1cm Packing List: 1 * Box of Nichrome Wire Jump Rings(50pcs)