This is a convenient dispenser that easily dispenses a precise 30ml amount. It is compatible with Japanese PET bottles (cocktail concentrate 1.8L, 2.7L, 4L, and 5L) with a bottle mouth diameter (outer diameter 36mm, inner diameter 28mm). Compatible with domestic 2.7L and 4L PET bottles (outer diameter 36mm, inner diameter 29mm). It has been washed and dried. I used it for whiskey. It shows some signs of use, but it works normally. This is a used item, please check the photos and refrain from purchasing if you have any concerns.