Description: Our carbonation cap is made of 304 stainless steel material and liquid ball lock is made of high-quality plastic material, sturdy and durable to use. With this cap you can simply fill an old PET bottle with cold liquid of your choice and carbonate by connecting your Liquid ball lock disconnect. It is designed to fit most soft drink PET bottles. So you could make your own soda water, carbonate beer or other soft drinks, easy and convenient. .
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