drinking water pump is used for 3,5 gallon bottle,it is a perfect drinking tool. electric drinking water pump1.Material:ABS, P.E, food-grade,without smell or toxic material to ensure waterquality. 2.Can be used with 5 gallons water bottle, Neck Dia. of the bottle: 55mm(standard)Advantage:1.Battery operated. (2*LR20,D Size) 2.No drips or leakage. 3.Great for the shed, cabin, camping, etc. 4.Dust- ...