Features: DIY gift choice: you can DIY or print the patterns on the surfaces of these blank keychains by the sublimation technology, which would be a lovely gift for your friends, girlfriends, mother, sisters and more. What's more, you can give them as a gift and let receiver to DIY the patterns they want. Printing method: the suitable sublimation temperature is 356 - 374℉/ 180 - 190℃ for 60 - 70 seconds, but the above information is for reference only, adjust your for time/ temperature settings based on the ink, paper and product provided; Note: there is a blue protective film on the product, just tear it off before using. You can use them to decorate keys, bags, handmade presents. Quality material: metal frame of this thermal transfer keychain is made of zinc alloy, and the internal thermal transfer part is metal aluminum plate, lightweight and hardness, smooth and comfortable, suitable for a wide range of people. Specifications: Material: Zinc Alloy Dimensions: Approx.70x32x17mm/27.55x12.59x6.69inch Package Includes: 1 Piece Keychain note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.