1Safe and Reliable: This oil drum lock is designed to provide maximum security for your oil drums, keeping the contents safe and preventing unauthorized access. 2Premium Material: Made from durable zinc alloy, this lockout tagout drum security lock ensures long lasting performance and resistance to rust, making it ideal for outdoor use and harsh conditions. 3Versatile Use: With a lock hole diameter of 7.5mm, this lock is suitable for drum plugs with an outer diameter of 72 to 5mm, ensuring compatibility with a wide range of oil drums. 4Easy to Use: The drum bung lock is designed for quick and effortless installation. Simply insert the lock into the drum plug and secure it with the included key for instant locking. 5Practical Use: Whether you need to secure oil drums on a construction site, industrial facility, or storage area, this drum plug locking device provides a reliable and effective solution, giving you peace of mind.