Size: approximately 4mm Instructions for use of tooth solid gel: 1. Prepare a cup of boiled water and pour about 30g 2. Pour into a glass and stir until transparent before removing 3. Remove the gel from the cup and cool for about 5 seconds. Then put the gel into the slot of the canine, so that you can stick the canine to your own teeth, and squeeze the gel into the gap between the teeth and the inside of the teeth by hand. This can make all of these into a complete and compatible alveolar. 4. Remove the socket and cool for a few minutes until the gel turns white. 5. Repeat these steps for the other canine. Please note that these alveoli can be used multiple times. Please note: Do not drink hot drinks when wearing braces. Please be careful not to burn when making braces Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store