Plastic airlock with dust cap
Allows CO2 to escape
Prevents air from contaminating your beer or wine
We used to make kraut in a large crock. No more, with grommet lids, these airlocks and gallon jars we make wonderful tasting kraut in variety of flavors. Thank you for having all the supplies I needed.
I will buy these again.
Nice standard air lock gets the job done at good price