This is a fitting that allows you to split the output of a carbon dioxide gas cylinder (Midbon). The second photo shows an example of use, and it can be used when using a regulator (pressure reducing valve) and a SodaStream direct connection hose with a single cylinder. Two spare packings are included, so you can rest assured even if the packing deteriorates. There are some scratches from the manufacturing process, but it can be used without any problems. *Due to the use of the same photos, the location and condition of scratches may vary slightly depending on the individual item. Please understand this in advance. *Due to the depreciation of the yen and rising prices, the cost of raw materials has increased, making it difficult to lower the price. We apologize for any inconvenience, but we appreciate your understanding.