Durable & Sturdy: The key lock box is made of aluminum, zinc alloy and heavy-duty steel, which make this key lock box much durable and sturdy, can protect the box from hammering, sawing or prying. No need to hide a key under the carpet, the vase or under a stone any more. 2 Install Method: This key lock box is so easy to install with two ways installation. With a removable shackle, you can securely hang this lock box on doorknob, fence or anywhere you like. Or you can mount this lockbox on the wall. Suitable for indoor and outdoor use. Safe & Easy to Set: This key lock box is an adjustable combination lock with 4-digit code and it offers 10,000 unique combinations, maximizing the security and eliminating the risk of lucky guesses. And it's easy to set your own password with the manual. La