Material:metal,alloyPacking:10pcsSize:as picture showUse:DIY Jewelry Making Bracelet Necklace Making1. we offer direct shipping service,and we can ship to customers directly without any receipt or invoice in the package.2. We offer express free shipping once the order value reaches $150USD!3. Due to the light and screen difference, there may be a slight difference of color in the images.4. There may be differences of 1 to 3mm due to manual measurements. Thanks for your understanding.5、If the protecting time is coming, you still not receive the goods, please contact us, we will extend the delivery date in advance.