1.Compatitive price with high quality 2.Material:PP 3.No batteries required. 4.Applicate for various place,school,hosipital.. ... . 2.Can be used with 3,4,5 gallon water bottle, Neck Dia of the bottle: 56mm(standard), 58mm 3.Uses heavy-duty vacuum action and ... pump. 1..No batteries required. 2.No drips or leakage. 3.Great for the shed, cabin, camping, etc. 4.Dust-proof ...