Usable on Standard 191 bottles, Easy to pour water by using T-Pump than tilting or lifting drinking water bottles, 240 ml glass fill in only 2 presses, Apply on almost every size of standard bottles because of adjustable suction tube length, Economical and inexpensive; no power cost, Convenient use rather than stand and tap, Designed for durable, FDA approved plastic (high quality polypropylene), Convenient working from head press, High quality spring for powerful blow, no direct water contact to spring makes it life longer, Suitable for out-of-door activities, parties, and picnics and other occasions also.