Feature●[HIGH-QUALITY MATERIAL]: The 3-piece airlock used for fermentation is made of BPA-free PP plastic. You will receive 18 silicone grommets and 6 fermentation air locks. It is tasteless and non-toxic, safe and durable, safe to use, long-term Use you to keep food healthy.●[GOOD SEALING EFFECT]: Easy to use, just drill a hole in the fermenter cover (according to the size of the air valve), then insert the black grommet into the cover hole, and put the tapered tip of the air lock into the grommet hole It can be sealed well, bubbles will overflow during the fermentation process, and at the same time prevent oxygen damage●[EASY TO CLEAN]: The transparent material is easy to clean, the valve can be disassembled, and it can be cleaned easily with a small brush.●[WIDE RANGE OF APPLICATIONS]: The fermentation airlock kit can be used as a multi-functional fermentation equipment, which can be used for a variety of preservation and fermentation purposes, such as the fermentation of spicy cabbage, kimchi, sauerkraut, grape juice, etc., or brewing beer, wine, cider, fruit wine , Rice wine, rice wine, etc.●[AFTER-SALES SERVICE]: Customer satisfaction is our responsibility. We hope that the products you receive will make your life happier and happier. If you have any questions or dissatisfaction, please leave us a message, we will definitely make you satisfied and worth buying.Description Product size; 4.5 x 1.45 x 0.31 inches Product weight; 6.17 ounces Product quantity; this product has 6 plastic air locks, 18 silicone black buckles Buttonhole material: silica gel, outer diameter 15mm, inner diameter 8mm, thickness 6mm Main function; The air lock kit can be used as a multi - functional fermentation equipment for preservation and fermentation for various purposes, such as preservation of food and fermented kimchi; spicy cabbage, sauerkraut, wine, beer, cider, etc. Maintain good sealing: easy to use and clean, just drill a suitable hole in the fermenter cover (according to the size of the air valve), then insert the black grommet into the cover hole, and insert the tapered air lock The grommet hole is well sealed and fermented to prevent oxygen from damaging the fermentation and beer brewing process.