Door Reinforcement Lock offer extra security on front door, side door, back door, bedroom door, kitchen door, garage door, basement door, etc.  Specification:Material: Zinc alloyColor: SilverSize:5.5 x 7 x 1.5cm / 2.2 x 2.8 x 0.59inch(W*L*H)Package Included: 4 Pcs x Door Reinforcement Lock with Some AccessoriesAdvantage:The home security door lock is made of zinc alloy, not easy to rust, ensure long service life.This reinforced lock effectively provides higher safety than traditional door security devices to protect against unauthorized entry.The door reinforcement lock features a spring-loaded design that ensures both women safety and tamper resistance performance.Plus, not only can doors not be kick in by intruders, it protects against pick a lock and bump while in the locked position.Simply mount the door lock on your door frame with a power screwdriver and drill, you will get extra security situation in minutes.Note: Manual measurement, please allow slight errors on size.The color may exist a slight difference due to different screen displays.