It is convenient because autoclave is possible. If the water pressure is strong, it seems to hold back flow considerably firmly, but if there is no pressure more than a certain level liquid will leak little by little. It is not suitable when you want to prevent water leakage with weak pressure.
I connected it with a silicon tube with an inner diameter of 5 mm, but cut it and use it with a smaller tip diameter to increase efficiency. You can use it with a good feeling. It is not 6 packs, it is enough for single item or 2 packs.