Detachable Lock Shackle: Easily install the key lock box on your door or wall with screws. The detachable shackle provides two installation options, offering maximum flexibility to meet your needs. (Notice: Please open the lockbox to find the removable shackle.)Versatile Uses: This portable lock box is ideal for your apartment entrance, garage, rental house, warehouse, or storing keys for your Airbnb, real estate agents, cleaners, pet sitters, and more. No need to hide keys under carpets or flower pots.Secure 4-Digit Combination: With 10,000 possible combinations, our lock features high security and is extremely difficult to crack. The reset mechanism makes it easy to personalize your password anytime.Durable Aluminum Alloy Shell: The robust and durable shell protects the security lockbox against hammering, sawing, or prying, keeping your keys safe and secure.Weatherproof & Corrosion-Resistant: weatherproof lockbox is rustproof and corrosion-resistant, ensuring long-lasting durability. Suitable for home and office use.