Sturdy connector: Our key buckle is made of alloy with a plastic buckle, which is sturdy and durable, and can be replaced daily and reused multiple times. Security Design: Compared to traditional open loop , the buckle design has no exposed end and can securely connect your belt loop, wallet, keyring, backpack zipper, or other accessories. Easy to use: Simply place the key buckle with the accessory and secure it with a transparent plastic clip, then press tightly for easy opening and closing. Custom keychain: You can use these blank keychains according to your preferences to DIY unique keychains, office access cards, ID cards, and campus cards. Keyring loose: You will receive a 100 pieces, including 100 metal lifting rings and 100 plastic buckles. The diameter of the lifting ring is 20mm, suitable for most keychain accessories. Colour:Silver Material:Metal Size:25mm, inner diameter 20mm Package Contents: 100 * keychain Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.