[WIDE APPLICATION] - This is a great code key box for storing keys and bank cards, etc. It can be wall mounted for home, office, warehouse, vacation home or anywhere you need it. You can share spare keys with your friends, family, neighbors and caregivers. With this lockable outdoor key safe, you don't have to worry about keys you've hidden under the carpet. [HIGH SECURITY] - Our wall key safe is made of high quality aluminum alloy body and durable steel locking mechanism, which provides extra strength for the outdoor key box to resist attack hammering or drilling. Weatherproof metal material can keep your keys and cards safe. [RELIABLE 4-DIGIT COMBINATION] - uses 4-digit combination to ensure robust protection. The 4-dial combination key safe offers up to 10000 different combinations, is much more than 3-digit models, is also harder to crack. It is easy to redefine the desired combination at any time, wihic makes your valuables safer. (Note: Take a photo/write it down to save your code!) [MINI SIZE&EASY USE] - External Size (H x W x D): 3.7 x 2.95 x 1.37 inch, Internal Size (H x W x D): 3.2 x 2.75 x 1.1 inch. Comes with palm-sized key safe box, which can hold multiple keys, perfect for daily business, friends, relatives, home services, pet sitters, real estate business and Airbnb rentals, etc [EASY TO INSTALL] - Only 4 simple steps to complete the installation: Draw the outline of the screws → Drill the holes → Nail in the expanded dowels → Install the box using screws. You can give this exterior code key box as a gift to your parents living alone or children living in a rented house, which is convenient for them. Colour: black Material: Aluminum alloy Size: about 9.4 x 8cm Package Contents: 2 x code key box