materials: Our magnetic lock box for under car is a and reliable key safe box to hide a key outside; Made of super material that can protect the key lock box from damage, etc; And there is soft sponges lining inside to better protect the items inside. Hide Key Lock Box: Magnetic key holder with combination lock equipped with a big strong magnet; It can securely attaches to any metal ; It stick to our car's undercarriage even over bumps and rough roads. Secure Combination Lock: Hide key lock box adopts a more secure combination lock design, which makes it to hide your keys! And with the password lock, we dan't have to worry about the keybox being opened by strangers anymore. Storage Space and Waterproof Bags:The magnetic key box can fit your big keys; Large capacity meet multiple storage needs, such as , door keys, car keys, usb drive, cash, etc; Besides, it comes with 3 waterproof bags of different sizes that can be well waterproof and dirt-proof; store valuable items with confidence. Various Uses: Magnetic hidden key holder is good for keeping a spare key; After using it, we no longer have to worry about locking ourselves out of door or car door; In addition, also use it to place the locator, which can our safety outside, Weight: 0.47840310854 Pounds, Manufacturer: Taviko