【Cordless + Electric = Free Your Hands!!!】 Frees your hands, can transform any beverage container into an easy-to-use magic milk tap dispenser without lifting heavy bottles. Fits most bottle mouths. The refrigerator gallon milk dispenser is powered by 2 "AA" batteries (not included). 【2.5CM - 4.5CM Universal Lock】 Designed with 3 layers of sealing, mouth diameter 2.5CM, 3.5CM, 4.5CM. The gallon beverage dispenser fits most bottles and jugs, run, . You can install it on milk cartons, cans, beer cans, juice bottles to your cup. 【Safe Food-Grade Silicone】 Harmless and non-toxic. The threads are also wrapped in food-grade silicone and will not come into direct contact with liquids. Additionally, it's easy to clean and very durable. Undoubtedly a great helper in your daily life, making it easy to drink the beverage you want. Can be used at home, in the kitchen, office, school, picnic, holiday decoration, to facilitate your drinking water.