Magic Vac® Wine Bottle Stopper/Bottle Cap designed to work universally with all Magic Vac® and Avid Armor vacuum sealers equipped with an accessory port. Must already have an accessory hose attachment which can be purchased separately. Can be used to vacuum seal the lid on the Magic Vac® Container Set. Wine bottles, olive oil, balsamic vinegar etc. can be preserved with this special accessory.