PACKAGE CONTENT: 50 x key rings with chain + 50 x open jump rings. . DIMENSION: Key ring diameter: 25 mm /30mm, Open jump ring diameter: 8 mm/0.31inch. . MATERIAL: Made of nickel plated metal, not easy to fade and rust, strong and durable. With glossy surface and good texture, this key ring can match well with your keys. . EASY TO USE: The keychain rings are convenient to connect keys, clasps, charms, links and other ornaments. Easy to use and convenient to carry. . WIDE APPLICATION: Key rings can collect your door keys, garage keys, car keys, hang cards, DIY accessories (trinkets, beads, tiny dolls, toy models, mini cubes or tags), also can used for making arts and crafts project. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!