Wine preservers are used to remove air from an open bottle of wine. The removal of air from a bottle of wine keeps the wine from turning bag. Simply pump until the needle reaches the "red zone" to know you've reached the necessary vacuum.Metrokane designed a wine preserver that allows you to see if the vacuum has held.
The V-Gauge Wine Preserver is purchased separately.
Metrokane V Gauge Stoppers - includes 2 stoppers.Be sure to check out our entire selection of Metrokane products.