Description
Dear friend, the air filling hole has two sides, you can run to fill one side first,
then close the side, and then run to fill the other side,
so that it can be quickly filled with air, and no leakage.















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Dear friend, the air filling hole has two sides, you can run to fill one side first,
then close the side, and then run to fill the other side,
so that it can be quickly filled with air, and no leakage.














