GORGECRAFT 10Pcs 2.9-3.1 Inch Wide Mouth Hydroponic Cover Cork Lids Mason Jar Insert Corks Stopper Glass Planter Plant Vase Cover Replacement with Center Hole for Aerogardens Growing Pods

["Ventilation Cork Lid: Designed with a hollow cork and precision hole, this hydroponic vase lid delivers steady airflow to boost root health and make your hydroponic plant care easier","Tight and Leak-Proof Seal: The natural cork material has excellent elasticity, allowing it to expand slightly inside the bottle neck to create an airtight, leak-proof seal. It effectively prevents spills, evaporation, keeping contents fresh and secure","10Pcs Plant Corks: Package includes 10pcs cork stoppers, 2.87 to 3.11 inch(7.3 to 7.9cm) in diameter, 0.75 inch(1.9cm) thick, center hole: 1.14 inch(2.9cm)","Cork Material: These bottle stoppers are made of high-quality natural cork, which is lightweight, durable and sturdy. The natural cork features a soft texture that provides a tight, secure seal while being gentle on glass containers","Wide Application: These cork covers are perfect as sealing stoppers for glass bottles, effectively locking in freshness and protecting internal liquids or items. They also act as ideal lids for hydroponic flower pots, offering a stable growing environment for hydroponic plants. They can be used as DIY handicraft materials for making wood panel paintings, cork decorations and other handmade projects"]