Manual Water Pump,For 3,5 gallon bottle( 58mm neck size) New PP material Manual Water PumpModel: WP- ... be used with 3,4,5 gallon water bottle, Neck Dia. of the bottle: 56mm(standard), 58mm. 3.Uses heavy-duty vacuum ... China,both hand pump and electronic pump,for 5 gallon bottle or small bottle,like 5Li,8li....FactoryWelcome OEM program.