Different than other normal 3-piece airlock in the market, it`s made of fda healthy material, more harder and more transparent. You can easily 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 fda transparent airlock. Each piece in the kit is set up to work together to provide you with the proper tools to produce healthy food in a simple system. Once you have your food submerged under your glass weight, simply place the lid. Fill your airlock 1/2 with water, cap, and insert into your lid. It fits perfectly into the #6 stopper with a tight fit and no leaks, nice and sturdy.( Pls consider whether your container fit for our extra stopper size or not before buying.). The 3-piece airlock is the perfect choice for the primary fermenter, since it comes apart for easy cleaning in the event of a blow-off. If you want to keep a shipshape home brewing operation, the 3-piece airlock is the only way to go. It's a cinch to take these apart and clean them thoroughly. You can get 4 sets in 1 package (4 airlocks, grommet and #6 stopper), so if one goes bad, you can turn to your spare airlocks with ease. It has been very rare to have something go bad during the fermentation process. Since the lacto-fermentation process should take place in an anaerobic (without air) environment, it is key to food safety. Airlocks take the guesswork out of when to “burp” and aid in providing the proper anaerobic environment for food safety. This simple tool, the airlock, not only makes fermenting easier but aids in producing safe and healthy food. Who doesn't want that?

They simply help to prevent many of the problems that can occur during the fermentation process. If you don't have one, click into your cart now to get some ,making your fermenting even more simple and dependable. All our item totally new before ship to amazon. They had been safely packed with carton box. We offer you 1 year quality service. Any problem pls feel free to inform us. We will resolve it within 24 h.For additional information regarding the product, please contact with DuBuy support team.