Oggi's classy and beautiful bottle stopper design made of zinc alloy and food grade silicone is a great accessory to have in a home bar or kitchen. Comes in a single, well-built unit and keeps liquid from leaking by creating a tight seal even with sparkling wines and champagne. Can be used for wine bottles or even oil and vinegar bottles. Keep your wine fresher longer with Oggi's Airtight Stainless Steel Bottle Stopper. Easy to use! Simply insert the wine bottle plug into the bottle and press the lever to seal the bottle air tight. Compact design adding no storage space when in use and easy to store when not. Due to its lever, Oggi's stopper design creates a very tight seal and therefore is ideal for champagne, prosecco, cava and all sparkling wines. Cheers!