Just Press to Install the Hand Pump Great for home, office, school, factory, camping etc No Electric power Fits Most Standard Bottle size Product Description Innovative vacuum action for easy operation Easy working Just Press Pump HeEconomical no battery costs no motor No splash elbow design Removable tube for easy cleaning Great for home, office, school, Factory or Hospital ;Fits most standard bottle sizes Size: 20*9*9cm Color:blue+white Material:plastic Weight:0.25kg/set