Golden Vino Wine Bottle Air Pump Sealer Stopper Plug (Silver) All in one: Wine stopper with built in vacuum pump, this wine bottle stoppers provide an air-tight seal to prolong and preserve opened bottles of wine. Easy to use: Vacuum wine sealer is a hand operated pump. Simply cap an opened bottle with one of the stoppers and then place the pump over the stopper and start pumping the air out until resistance. Keeps wine fresh: by removing all air from bottle, making bottle air tight, you allow extra 7 days of wine storage. High Quality&gt;: Made with Aluminum alloy, PC, and sillcione. FULL PRECISION WARRANTY:  If there are any issues with your purchase you can simply return your product and will be issued with a FULL refund or a replacement unit (whichever you prefer) ZERO QUESTIONS ASKED.