3-Piece Airlock 4 Pack with 4PCS #6 Stopper and 8PCS Grommets, Fermentation Airlock Beer Wine Kombucha Brewing Kit,Carboy Airlock FDA Transparency Upgraded

Arrived quickly and are as described. Multiple use options for your plastic bucket, glass jar or glass gallon carboy.

muy buen producto

Works as intended and at a great price.

Pretty flimsy plastic one cracked after first use

Airlocks work well for homebrew!

Everything's fine except for the grommets which are way too small. To make them somewhat functional, you'll need to lubricate the airlock and grommet with water and with a lot of force, you can get the airlock to partially go in--enough so the holes at the bottom clear the grommet. BUT, the grommet is still on the tapered end of the airlock, so I worry it will slip off.I then realized because I forced the grommet on, the outside diameter had to change, so I re-measured with a caliper and indeed it did grow to about 1/2 inch. What this means is you need to drill a 1/2 inch hole to allow the grommet space to expand. BUT, this also means the grommet will fit loosely in the hole and since you have to push so hard to insert the airlock, you'll want to hold the grommet from the underside to make sure it doesn't push out. For me, this is really annoying because I wanted to pull out the airlock to take gravity samples. That's not an option with these (don't want to remove the lid and risk contamination to put the airlock back on). Instead, I'll drill another hole for that and fill it with a stopper.Unfortunately, I lack any spare grommets the right size. And all places online I've checked only sell kits which will essentially double the final price of these airlocks. If I can't find a hardware store that sells just one or two, or find a friend that has some the right size, I'll just hope the airlocks stay on. I would've returned them, but I don't want to wait for a replacement (really want to brew tomorrow). Oh, and it looks like the airlock diameter is metric (12 mm), so maybe a 7/16 inch grommet will work...What a pain.I can not for the life of me figure how they got that wrong. I can't believe we now need to ask "does everything fit together right"?I'm assuming the bungs are better sized, so that's why I gave it three stars.

Drilled a 1/2" hole in a 3-gallon bucket lid from big box store, added water to prescribed line, and placed over bucket with pepper mash. Fermented for 30 days, with bubbles escaping as process continued. For the price, can't be beat.

Perfect product