They can also be used for homemade crafts or gifts. Robust and Durable: Our spring rings are made of high-quality stainless steel, with a plated and polished surface and high gloss. It is not easy to fade, deform, and break after long-term use. They are lightweight, beautiful, and durable Easy to Use: Built-in spring hook, easy to use. Just press, quickly connect and release, and it will automatically close, opening and closing smoothly. It is easy to operate and can quickly and safely connect various fixed points. Size:about 18~21.5mm long，about 3.5mm wide,Inner Diameter: 12/15mm,2pcs，the appropriate size is sufficient to meet your DIY process production project Versatility: Suitable for everyday use, such as attaching to backpacks, handbags, belts, wallets, or as a key ring. They can also be used for homemade crafts or gifts. Or you can put it on your sports bottle. Color: We have black spring buckles, which can be designed with necklaces or bracelets. They can help connect your favorite necklace or bracelet. With the help of buttons, DIY will become simple and interesting