A top product einemg uten price. I have misused the Vacu Vin pump and use these plugs (several "Additional Sets" I have already bought) and my single malt whiskey bottles to "Vacumize", and make it more flavorful "durable". This works fine. AuCN after merheren weeks or even months is the vacuum fully available even in the bottles. The handling is also easy or even possible without instruction. Qualitatively make all parts of a high quality and durable impression.
Highly recommended for every connoisseur who wants to keep his tobacco fresh!