General description This large secure key box is designed for high security and convenience. Made from solid aluminum alloy, it is waterproof, corrosion-resistant, and weather-resistant, making it ideal for outdoor installations. The protective cover shields the combination dial from unpredictable weather conditions. Technical specifications Material: Solid aluminum alloy Inner dimensions: 11.5 x 8 x 4.3 cm Combination: 4-digit, allows up to 9,999 combinations Installation Includes 4 screws and 4 nylon wall anchors for installation on solid surfaces Can be drilled into the wall for secure mounting Usage Suitable for storing house keys, office keys, large car keys, credit cards, ID cards, and other small items Ideal for homes, gardens, offices, and various outdoor activities Provides a safe place for car keys while engaging in outdoor activities like surfing