Safe and Convenient: The magnetic key box provides a safe and convenient solution for storing spare keys for your car. With this box, you can keep your spare keys safe and easily accessible in case of an emergency. Versatile and Portable: This key cover is not only suitable for storing emergency spare keys, but also versatile enough to hold other small items such as coins, USB drives, or emergency contact information. Powerful Magnet: The key holder features a powerful magnet that securely attaches to the metal surface of your car's chassis. Magnet Dimensions: 3 x 3 cm. Specifications: External Dimensions: 2.7 x 5.6 x 2.7 m.