Have you ever had the need to stash a spare set of keys, and then run out of ideas of where to hide them? The Nite Ize Magnetic Key Box Hide Out is a convenient way to Store or hide them as well as High Value small items such as Diamonds and Jewellery or even SD and small Flash Drives. Hinged Lid with "O" Ring. Waterproof. Positive Locking Snap Lock. Lanyard Attachment. Neodymium Magnet for temporary attachment to Metal Surfaces Metal Plate with 3M VHB Adhesive for more permanent attachment to most surfaces Opening at Mouth: 40mm X 13mm Depth 70mm.