The Takaje Bottle Stopper Is For Use With The Takaje Vacuum Machine; Simply Place Into An Opened Bottle Of Wine, Attach The Takaje Vacuum Arm & In Seconds The Takaje Will Suck Out The Air & Re-create A Vacuum Within The Bottle.ideal For Preserving The Quality Of Opened & Unfinished Wine, The Takaje Bottle Stopper Is Deserving Of A Place In Any Kitchen Or Drinks Cupboard. takaje Bottle Stopper Measures 4.5cm H X 4cm Diaideal For Vacuum Sealing Opened & Unfinished Bottles Of Wineuse With The Takaje Vacuum Machine (not Included)vacuum Pump Removes Air & Bottle Stopper Forms Airtight Bungideal For Parties & Entertaining