Suitable for 48mm Water CupThis pourer cap fits for general drinking water cup with 48mm (1.8/9 inch) screw type only. Very hygienicOur bucket valve is more hygienic compared to the traditional drinking water machine. Because our valve can fix on the mouth of the bucket, so the water does not need to flow through the internal balloon cooling avoid the breeding of microorganisms. Suitable for a variety of occasionsIdeal for dispensing water at home, sporting events, picnics, camping or temporary activities. Easy to useJust attach the valve on the water bucket, then you can get drinking water easily without drinking water machine Safe and energy savingFast flow, no drip, simply device, no more electric energy, safe, eco-friendly and energy saving