Description This stackable barrel cover is designed to provide a secure and breathable seal for your containers. Featuring a mechanism, it makes optimal air circulation while maintaining a tight seal. The cover is suitable for various applications, including storage of liquids and chemicals, ensuring your contents remain safe and uncontaminated. Features -Color:Blue -Material:ABS, rubber -Size:7.30X7.30X2.80cm/2.87X2.87X1.10in -Breathable seal design: keeping the air fresh and enhancing the user experience -feature: avoids pressure buildup, preventing lid deformation and extending the product's lifespan -Versatile compatibility: suitable for various specifications of barrels, making it convenient and practical -Rubber ABS material: made from rubber ABS materials, ensuring product safety -Multiscene application: ideal for use in homes, medical institutions, laboratories, and other settings, providing a convenient caps for storagePackage list: 6 x Bucket lid 6 x seal rings