Rabbit V-Gauge Wine Bottle Preserver System This vacuum pump and stopper system is designed to preserve the flavor of opened wine bottles for up to two weeks. The wine stoppers fit any size wine bottle. Simply insert and attach the hand pump to use. A gauge on the top of each stopper shows when the necessary pressure has been reached. A button on the top of each stopper relieves the vacuum pressure to re-open the bottle. Constructed of tough, polished stainless steel for long service life. The stoppers are dishwasher safe for easy cleaning.