SOLID CONSTRUCTION: This lock box for house key is made of strong and durable aluminum material, sturdy and unbreakable, designed for long-term use. The all-metal high-strength construction provides reliable security, resistant to breaking, prying, or tampering. The protective waterproof cover helps shield against water and dust. EASY TO INSTALL: Simple to mount the key lock box outside on wall or door using the included mounting hardware. No power source required. EASY TO SET CODE: Remove the internal white plastic cover, turn the screws to set your desired combination, then replace the cover. The combination code is changeable according to your needs. WIDE USE: This key lock box is versatile and suitable for storing keys or small items indoors or outdoors. Ideal for apartments, offices, warehouses, garages, and more. Perfect for homeowners, family members, landlords, vacation rentals, property management, and real estate professionals to provide access for children after school, emergencies, gardeners, cleaners, and others. Color: Dark gray Material: Aluminum Size: 105 x 65 x 48mm Package Contents: 1 x Key Lock Box 4 x Expansion tube & screws 1 x Key tool 1 x English manual Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1-3cm.