- Dimensions : External lock sizes (Y x G x D): 12 x 48 x 34 cm; Internal area (Y x G x D): 9 x 27 x 52 cm. U-shaped hook dimensions: 5 cm high x 4 cm wide. Ample internal space accommodates up to 5 switches or 3 larger switches, along with cards and drivers. - Protection & Security : The key case features a sliding shutter cover and a durable rubber casing that shields combination dials from dust, rain, snow, and ice. Safeguard your keys with the reliable 4-digit combination lock mechanism. - Customizable Security : Easily set and reset your 4-digit personalized code providing 10,000 possible combinations for enhanced security. Share spare keys with family or coworkers effortlessly. Always keep a photo record of your code to avoid being locked out. - Versatile Installation : Comes with an easy-to-follow assembly kit. The metal structure ensures durability, and you can mount it using included screws or hang it like a vine lock. Suitable for various environments including homes, offices, schools, gyms, factories, and construction sites. - Portable and Practical : The removable handcuff-style switch allows for easy attachment to door handles, fences, railings, or pipes without the need for drilling. Install the switch box on walls or solid surfaces both indoors and outdoors wherever access to spare keys is needed. This key lock box offers a secure, convenient, and flexible solution for protecting your valuables and sharing access with trusted individuals.