【Durable Material & Weatherproof】This wall mount key lock box is made of high quality zinc alloy and heavy-duty steel, which is waterproof and rustproof, offer extra resistance to cutting and sawing, and it is environmentally friendly paint.【Large Capacity】The inside size of the waterproof key safe box is about: 2.17*1.14 inches, it can hold up to 5 house keys or 3 large keys. You don't need to hide your keys under a rug or planter.【4 Digit Password & High Security】With 4 dials, offers up to 10,000 combination possibilities, you can set any password you like without being cracked.【Easy Installation & Wide Application】Comes with 4 screw and 4 expansion plugs, it is easy to install and can be mounted on any solid surface. It is suitable for indoor and outdoor use.【Heartwarming Reminder】This lock box has no shackles.