Vacu Vin's Wine Saver Vacuum Stoppers are for use with the VacuVin's Vacu Vin's Wine Saver (sold separately). These reusable stoppers can keep open wine fresh for up to 10 days. When used with the VacuVin Wine Saver (sold separately) VacuVin's reusable Wine Bottle Vacuum Stoppers keep open wine fresh Includes 2 stoppers Universal fit for all wine bottles Pump until you hear the patented "Click" . The "Click" signals an air tight seal! Rubber Hand wash