This is a resettable key storage box with a 4-digit combination lock, which can provide 10,000 combinations. Large Capacity: This safe has a large space and can hold 6 keys at most. If you have important keys, you can put them in it. Sturdy Material: This product is made of zinc alloy, durable and stable, with rust-proof and waterproof function. Encapsulated Side: The side of the product is encapsulated, comfortable to hold, can prevent slipping and rusting. The combination is easy to set and can be used in the door handle or fence, suitable for homeowners, real estate agents, runners and anyone who needs to hide the key.