คุณลักษณะ

• 8th Grade Weather Change
• This adapter is used when two PET bottles are joined to experiment with cloud generation.
• Moisten one of the plastic bottles with water, put a small amount of incense stick, and put a rubber stopper into the mouth of the plastic bottle.
• And when you push or release the other plastic bottle ・・・?
• * Cannot be used with wide-mouth type PET bottles.