DetailsA fabulous design to preserve your unfinished wine bottles. Simply push this bottle stopper down onto neck of open wine bottles and it automatically self locks with an air tight seal. To release, simply press down the button on the top. The button top has 'WINE' engraved into it. Designed to fit standard wine bottle necks and will not fit most wide flange necks (unusual bottles). Made from high quality Stainless Steel.