The screw cap outer lid replacement is an essential accessory for maintaining the safety and integrity of your chemical storage containers. Its leak-proof structure ensuring that , while the plastic construction ensuring durability. Features -Color:White -Material:Plastic -Size:6.50X6.50X2.70cm/2.55X2.55X1.06in - Inner diameter: 54mm/50mm - Outer ring: 63mm - Tooth pitch: 5mm -Suitable for 10L bucket -Antitheft lid: effectively deters theft and unauthorized opening, ensuring the security of the contents -Ventilated cap: maintains proper airflow inside the bucket, ensuring freshness -Comprehensive: offers complete way for sealing and protecting , ensuring safety and efficiency -Sturdy: constructed from sturdy plastic, these barrel caps are built to last, offers excellent resistance to wear and tear -Thickened bucket lid: enhances the lid's durability and pressure resistance, providing use Package list: 12 x chemical barrel outer covers