Product Features:Replace your wine bottle?s cork or screw cap with a Pivot? Stopper, and pour a glass at a time with the Pivot? Wine Preservation System, preserving the remaining wine for up to 4 weeksMade using specially designed sealing plastic, each Stopper can be used again and againSix Pivot? Stoppers included, compatible with most regular shaped bottlesCompatible with Coravin Pivot Wine SystemDimensions: 35mm(L) x 35mm(W) x 5mm(H)Made of injection molded plasticClean the Stopper by rinsing it in a steady stream of warm water for several seconds; dry with a soft clothHow to Use?Open the bottle of wineReplace the cork or screwcap with a Pivot Stopper with the cap open (ensure the Stopper and bottle neck are both dry)To pour, insert the Pivot Device through the Stopper. Tilt the bottle so the spout is over the wine glass, then press and hold the button on the Device. Release the button and bring the bottle upright to stop the pour