Lion Locks 1500 Key Storage Realtor Lock Box with Set-Your-Own Combination, (6 Pack, Black) Perfect for your spare key, emergency access for seniors, realtors, construction workers, family and friends. Combination lock for keys is great for after-school access for kids who lose keys Hanging key storage box with combination access to multiple keys Personalized, adjustable combination lock with 4 dials offers up to 10,000 combination possibilities for optimal security. Rust-free and life-time product guarantee