Special wine system with a thin hollow needle and argon gas protects the remaining wine from oxidation. The set includes a wine pourer, a set of three needles, eight cartridges, and a carrying case. Here's how it works: place the system on the bottle and push the needle through the cork. The bottle should be at a 45-degree angle. To pour the wine, simply release the trigger. After tasting the wine, just pull the needle out of the cork, and the cork will naturally close due to its elastic nature, protecting the wine for further tastings. Each Coravin cartridge can pour approximately 15 glasses of wine. It takes 25-30 seconds to pour a glass of wine (150 ml) using the needle.