Removable Shackle - Two way installation with a removable shackle. You could hang it exactly where you need like door knob or car. Or all necessary mounting hardware is included 4 screws and 4 nylon expanding wall anchors to ensure that the key safe box can be mounted on any solid surface.  Durable Material - Crafted from high strength zinc alloy body and hardened-steel shackles, the key lock box guarantees secure for your keys. The shutter shields the 4 combination dials from rain snow and ice. Also, the reinforced metal molded body helps to withstand hammering and sawing.  Ultra Security - This key storage box with 4 dials offers up to 10000 combination possibilities so that it is hard to crack. And it gives you the option of resetting the combination whenever you wish. Please note that after the password is reset, it is best to take a photo record or record it with a note.  Large Storage Capacity - The key lock box outside size around: 7.3*3.5*9.3cm. With a large storage space, this wall mount lock box can store up to 5 house keys or other small things like U Disk, car keys, access cards and so on.  Widely Usage - This weather-proof lock box is good for using in many areas, so that you no need to put your keys under the carpet or flowerpot for hiding. It is ideal choice for indoor and outdoor, such as emergency entry, vacation home, pet sitters or wherever else you may need it.