Master Lock 5422D Push Button Portable Key SafeHighlights: Portable key safe provides secure storage of keys or access cards Set your own combination using up to 12 letters, numbers, or both Large buttons for ease of use, even in low light conditions 3 1 8in (79mm) Wide durable metal construction Large internal cavity and removable key hook prevents jamming Molded bumper and vinyl coated shackle prevents scratches to your door Protective weather cover prevents freezing and jamming Convenient push