Notice: our brand. Recently, there have been many counterfeit and shoddy products. Please see our brand clearly and do not buy the wrong product. Ours are genuine. We can only guarantee the quality and after-sales service of our products, please make sure you see carefully before ordering. Highly compatible More portable: suitable for most buckets in the market. 5-6 gallon fits various one gallon water bottles with universal jug cap. (2.16" / 55mm neck diameter). For example: 18.9 L ect. Lightweight and easy to install: No batteries or power supply required, takes up less space, is easy to use and does not require regular cleaning like expensive water dispensers and is used anywhere in the world. inside and outside. Safety Clean:This product is made of high density ABS plastic, which is non-toxic and harmless. Easy to use:Soft touch button. children, the elderly and adults can easily use the pump.