This high-security door lock is crafted from extruded aluminum with a satin nickel anodized finish. This reinforcement lock meets building codes and is engineered to withstand up to 800 lbs of force, making it virtually impossible to force open from the outside. The lock features a spring-loaded, child-safe, and tamper-resistant design that protects against unauthorized entry by preventing lock bumping and lock picking (when locked). Installation of this non-handed reinforcement lock takes just minutes and can be used on any inward-swinging door, regardless of door thickness. Color: Silver Material: Aluminum alloy Size: About 7.6 cm Package Contents: 2 x Door Reinforcement Lock with screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.