General description There are 16 DIY Sublimation Blank Keychain Plates in the package, featuring a classic subway/motel hotel keychain shape, perfect for personalizing your keychain. These keychains allow you to print unforgettable moments with friends using sublimation technology, making them lovely gifts for friends, girlfriends, mothers, and more. You can also create your own patterns as gifts. Technical specifications Material: High-quality medium density fiberboard (MDF) Thickness: Approximately 3mm / 0.12 inch Dimensions: 90 x 45mm / 3.54 x 1.77 inch Temperature for thermal transfer printing: 180-190 degrees Celsius / 356-374 degrees Fahrenheit Measurement allowed error: +/- 1-3cm Usage Set the temperature of the transfer machine between 180-190 degrees Celsius / 356-374 degrees Fahrenheit for thermal transfer printing. Tear off the protective film on both sides before use. Both sides of the blank keychain board can be printed as it is a double-sided coated sublimation board.