690 Pieces Open Jump Rings Jump Rings, 6 Sizes Metal Open Jump Rings, Jump Ring Connectors with Box for Jewelry Making, 4/5/6/8/10/12mm (Silver)

Upper Material: The open jump rings are made of iron with shiny gold or silver electroplating on the surface, which is durable, not easy to fade and lightweight for long time use.
Package Includes: It includes 690 double lock jump rings with 6 sizes (4mm, 5mm, 6mm, 8mm, 10mm, 12mm) in silver or gold color, which is enough to meet your different craft needs. Simple to Use: These round metal rings have excellent spring retention. It is easy to open the ring and close it tightly. Don't worry about your keys or crafts falling apart. Convenient to Store: All split rings are packaged in a split plastic storage case, easy to find and carry. You can do DIY discovery projects anytime. Wide Application: These open loop rings are widely used for many DIY craft projects, for decorating delicate bracelets, anklets, necklaces, etc. It is also perfect for key rings.