Extra Large Capacity - The large key box with combination lock has extra large space (internal size approx.: 4.3 x 3 x 1.6 inches), you can place multiple keys, such as house keys, car keys, security cards. More storage space than traditional key boxes. You can put your keys or car keys in it when you go to work or on vacation. HIGH SECURITY - The key box with combination lock is made of duralumin alloy, which is durable and this metal material is rust-proof, waterproof and corrosion-resistant. High-quality aluminum alloy protects the box from hammering and sawing. A protective cover protects the combination dial from unpredictable weather conditions. The outer surface of the key box is made of environmentally friendly materials and does not Easy to Use: Set the number you want as a password, the 4-digit combination is easy to remember and reset. The 4 dials offer up to 10,000 combinations, are difficult to crack and are much more secure than a 3-digit safe. The code key box works