Brand new, unused. This is a commercial-grade, fixed-quantity dispenser. This product is exclusively for domestic, large-capacity PET bottle alcoholic beverages. Cap size: Outer diameter 36mm, Inner diameter 29mm This type is attached directly to PET bottle alcoholic beverages such as commercial-grade Kakubin, Jim Beam, lemon sour, and fruit liquor. You can make highballs without any variation in taste by simply pushing once for whiskey and pouring in soda water. One push dispenses 30ml. There is also a line indicating the half-quantity, 15ml. The third photo is a reference photo. The fourth photo shows it being used at home on a 4-liter bottle of Takara Shochu! I've set the price low, so please refrain from price negotiations! ‼️️Shipped via non-standard mail‼️️ There is no tracking number or insurance. If you would like a shipping method with tracking, please let me know. I will adjust the shipping cost to reflect the difference!