Feature:
◆ Made of high quality BPA-free polypropylene w and rubber grommets
◆ Easy operation for healthy fermentation food
◆ Isolate the air to prevent oxidation to allow automatic fermentation
◆ Suitable for preserving, brewing, making wine, beer, fermenting sauerkraut, kimchi
Packing list:
3 * Bubble Airlocks
3* Rubber Grommets
