Twin Bubble Airlock S With Stopper Grommets for Homebrew Carboy Stopper Fermenter Fermentation Seal Valve

it`s made of healthy material,more harder (no fragile)and more transparent.(Clearly see the whole fermentation process)Apply pressure slowing to the airlock when inserting into the drilled plug/stopper and they will last a long time as it`s top quality transparent airlock. This new type of dust cap has a zigzag design on the surface and will not slide when opened. There are 3 buckles inside, press it down gently, you can close it with a snap, pull it up and rotate to open it. The lid does not need to be drilled as there is gap around it, which allows the gas to escape. These airlocks are solid and reusable.They can lasts for a long time.Just drop it in your sanitizer and reuse it many times and many occasions(kimchi,kombucha,brewing wine making).Research shows that fermentation helps make food easier to digest and often boosts its nutritional value.