Manual Water Pump,For 3,5 gallon bottle( 58mm neck size) New ... used with 3,4,5 gallon water bottle, Neck Dia. of the bottle: 56mm(standard), 58mm. 3.Uses heavy-duty ... pot. 4.Simply push down on the top of the pump. Why use SKL Manual Water Pump? 1.No batteries required. 2.No drips ... We are the biggest supplier of such kind pumps in China,both hand pump and electronic pump,for 5 gallon bottle or small ...