Clear acrylic set of cups with a vented lid. Wide mouth design makes it easy to clean. Airlocks are also called Fermentation Locks. Airlock stem will fit inside the hole of any drilled stopper (not Included)
Airlocks are an integral part of a closed fermentation set-up, filled with water or vodka, they keep bugs, dust and bacteria in the air away from fermenting beer or wine. A tight sealing lid and a drilled rubber stopper are needed to complete the closed fermentation set-up.