Quality material: Sublimation keychain blanks are made of MDF material, which with and comfortable touch feel, lightweight and high hardness, perfect supplies to decorate keys, bags, phone and so on; diameter of each heat transfer blank measures 5 x 5cm/ 1.9 x 1.9 inch, thickness about 3mm/ 0.12 inch. Double-sided & protective layer: these heat transfer blanks are double-sided , you can create image or pattern on both side, and easy to sublimate, great for improving exprimental and inspiring imaginations; both sides of the MDF blank are covered with protective film, just tear off slowly and you will a white heat transfer blank in edges design. Easy to Use: if you were go to transfer image or pattern on the sublimation keychain blank, set the temperature of your transfer machine 180 degrees Celsius (356 Fahrenheit) for 35 seconds, the heat transfer temperature and time affect by your local temperature and humidity, and keep the sublimation blank cool you off the heat transfer tape or transfer the image on the second side. Colour: White Material: MDF Package Contents: 60 * Blank boards 60 * Key rings 60 * Jump rings 60 * (random color, ' accept the specified color) Only the above package content, other products are not included. Note: Light 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.