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How to turn a Fixed Expander Properly

Use the key provided and insert it into the hole closer to the front of the mouth. Push the key towards the back of the mouth (in the direction of the arrow) until you cannot turn it anymore. The next hole should be visible at the base of the arrow for your next turn. Be sure when you are taking the key out you do not undo your turn. It is important to take the key out in the same direction that the turn was completed.