(2 Set) FERRODAY 0.5 Micron Diffusion Stone Stainless Steel Aeration Stone Carbonating Stone with 1/4" Barb for Homebrew Wine Beer Soda Air Stone 0.5 Micron + 20 Inch Silicone Hose

I was concerned that it would slip off the gas inlet fitting on my ball lock corny keg. It seems to be sufficiently secure.

These produce a very fine mist of bubbles and seem to withstand nitric and NO2 gasses with a dozen uses an no obvious corrison. They are outstanding for ad-hoc nitrogen oxide gas absorbers. The main downside is the pressure required to achive throughput, several PSI, at the hairy edge of typical glassware.

Carbonates my brews much faster than force carbing.

I got these to put in my Corny kegs, but tried one to aerate my wort after brewing a batch. Well, they're too fine for an aquarium pump to generate pressure to push anything thru them. I have no doubt they'll do fine for their intended purpose, but figured I'd post this note. I haven't bought any, but have read the 2 micron stones will work with an aquarium pump. Research this yourself since I haven't done it....

Using for making vinegar these have held up through 3 three gallon batches of vinegar and show no signs of deterioration or clogging.

High quality at a fair price. Nice even flow, just following initial use instructions.

I connected mine straight to the keg tube without putting a clamp on the tubing. The beer was good, it never got infected. I was able to get my beer carbonated thanks to these little guys.

Good bubbles