Descriptions:Material: Our spring o rings are made of high-strength zinc alloy, which is shiny, and not easy to fade. Anti-rust, anti-corrosion, and highly corrosion-resistant, durable, and sturdy for long-lasting use.Spring Design: This spring o ring has a built-in spring structure that allows the copper ring to automatically maintain a fastened state when closed. It is convenient and quick to open and close, a labor-saving operation and can be used repeatedly.Easy to Use: Just press the spring hook can quickly open the connection, and it will automatically close when released, ensuring the stability of the connection, and can be used with most handbag backpack keychains.Applications: These spring keyring buckles are widely applied in all kinds of hand DIY accessories, which can be used for necklaces, bracelets, purses, key rings, luggage bags, exercise bands, dog leashes, webbing, and lanyards, also can be used to extend the strap on your handbag, shoulder bag.