This is a common item found in izakayas (Japanese pubs) that dispenses 30ml and 15ml with a single push. It's compatible with large-capacity PET bottles (outer diameter of spout: 36mm and 28mm, cocktail concentrate: 1.8L, 2.7L, 4L, 5L). See image 2 for details. It's very convenient during busy times like banquets. The staff loved it after using it once or twice, but unfortunately, I'm selling it because the large commercial PET bottles were visible from the customer seating area, which didn't fit the atmosphere of the restaurant, and it was unpopular with customers. It will be disassembled for shipping.