High Security - The combination lock box is made of high-strength zinc alloy and solid steel, which prevents the combination lock box from being hammered, sawed or pried, rust-proof and sturdy, making it a reliable key safe. 4-digit combination code - The outdoor key box consists of a 4-digit adjustable metal wheel lock, with 10,000 combination codes, and you can reset the code at any time. Large Capacity - The portable key safe has a spacious interior and can accommodate up to 5 house keys. You can put your house keys, car keys or access cards in it when traveling or on business. Easy to Install and Use - Contains all necessary installation materials, including 4 screws, 4 nylon expansion anchors and instructions (may not be in English). Just insert the screws and plastic expansion anchors, then drill them into the wall or other hard surface and make sure they are firmly installed. Widely Used - For easy access and security, this key cabinet is suitable for storing spare keys for your house or car, suitable for emergencies, home healthcare, vacation homes, pet sitting, Airbnb, house rentals, etc.