Each Coravin Wine Access System is elegantly designed and engineered with precision to deliver consistent quality that will allow you to pour and enjoy your favorite wines for years to come. The Coravin™ System uses technology that keeps the cork in the bottle, where it's been since the bottle was sealed. Pour glasses whenever you like, and know that instead of oxidizing, the remaining wine will continue to age naturally. How Coravin works: A thin, hollow needle is inserted through the cork to access the wine. The bottle is pressurized with argon, an inert gas that has no effect on the taste profile of wine. The wine then flows through the needle and pours into the glass. The needle is removed from the cork and the cork reseals, protecting the wine from oxidation, enabling you to enjoy your wine glass by glass, weeks or months later. The thin, non-coring, medical grade needle passes through the cork to access and pour the wine, leaving the cork intact. When the needle is removed, the cork reseals and continues to protect the wine. Coravin’s proprietary argon gas capsules create a perfect seal in the system so that even months after initial use, no gas will escape. The Coravin System’s ergonomic handle and trigger design enables easy pouring and control. The clamp is designed to fit securely on standard bottles as large as magnums. It also allows the Coravin System to stand on its own when not in use.