The Master Lock No. 207EURD Magnetic Key Case features a rust-free, plastic construction for durability. The Car Keys Box enable to hide one or two keys under your car with the magnetic part. The design of the case allows for proper fitment of most keys, including keys with a fob. The recessed magnet securely attaches and holds to any steel surface. Ideal to hide your key and attach it to your car underside. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.