1. This excessive security door lock is built of extruded aluminum and springs in a satin nickel anodized finish2. This reinforcement lock meets the Texas constructing code requirements, and it's designed to withstand as much as 800 lbs.3. of force, making it virtually not possible to defy from the exterior.4. This lock contains a spring-loaded, child-safe and tamper-resistant design that protects against unauthorized entry by stopping lock bumping and lock picking (while in the locked position).5. Installation of this non-handed reinforcement lock could be accomplished in just minutes, and it can be used on any swing-in door of any door thickness.color:SilverMaterial:Aluminum alloysize:About 7.6cmPackage Contents:1 x Door Reinforcement Lock with screwsOnly the above package content, different products usually are not included.Note: Light reflection and diverse reveals can cause the color of the thing within the photograph somewhat varied from the real thing. The size allowed error is +/- 1-3cm.