Large Reinforced Security Digital SafeThe Master Lock Large Digital Combination Safe Reinforced Security is designed to protect your valuables against thefts and other attacks. The solid steel construction, steel live locking 1 inch (2. 5 cm) bolts and concealed hinge door give assurance to the safety of your irreplaceable items. The programmable electronic lock allows you to chose your combination while the override key makes sure you can always access to your safe, even in the case of