This high security door lock is constructed of extruded aluminum and comes in a satin nickel finish. This reinforcement lock meets building code requirements and is designed to withstand up to 800 lbs. of force, making it extremely difficult to breach from the exterior. This lock features a spring-loaded, child-safe and tamper-resistant design that helps prevent unauthorized entry by resisting lock bumping and lock picking when in the locked position. Installation of this non-handed reinforcement lock is quick and can be completed in just minutes. It can be used on any swing-in door regardless of door thickness. Color: Silver Material: Aluminum alloy Size: Approximately 7.6cm Package Contents: 2 x Door Reinforcement Locks with screws (only the above items are included; other products are not included) Note: Light reflection and different displays may cause slight color differences between the item in the picture and the actual product. A measurement error of +/- 1-3cm is allowed.