This set of 10 airlock grommets is perfect for wine and beer making at home. The grommets fit onto bin and bucket lids, allowing for the release of gas during fermentation. Made of durable rubber, these grommets are easy to install by hand and are suitable for both manual and automatic operation. The black colour blends in seamlessly with your brewing equipment. Ideal for enthusiasts of all levels, these airlock grommets are compatible with a range of brewing equipment and are an essential part of any brewing kit. Whether you're a seasoned brewer or just starting out, these grommets help to ensure that your beer or wine is properly fermented and carbonated.