Description:Material: Titanium alloySize:Small size : Keychain : 37*17MM, Thickness: 5mm; key ring size: out diameter: 20mm. Big size : Keychain : 59*26MM, Thickness: 5mm; key ring size: out diameter: 26mm. Color:blue/greyFeatures:1. The product is very light, 11 grams for the large size and 5 grams for the small size, and it does not feel the slightest weight when wearing it.2. Suitable for wearing keys, mini lights, pendants, etc.3. Blue adopts anodizing process, and the color will gradually change when the temperature changes.4. Arc design, press and rebound in secondsNOTE：1. As we all know ,the different computers display colors differently,the color of the actual item may vary slightly from the following images.2. If you feel difficult to choose the size ,you can feel free to contact mewe will give you some suggestion,but it is for you reference only.3.We could accept Mixed items,Colors And Sizes Order. The more quantities, the more discount.Package include: 1 pcs* Titanium Keychain

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