• Chain door lock made of galvanized steel, offering high resistance and durability • Allows you to check who is outside before fully opening the door, providing greater security and privacy • Can only be opened from the inside, making unauthorized access more difficult • Compact design that does not take up much space, ideal for places with limited space • Easy installation with included screws, compatible with screwdriver or electric drill • Size: 8.55 x 5.7 x 1.5 cm • Silver finish, resistant to rust and wear • Suitable for wooden, PVC, and other material doors in homes, apartments, bedrooms, and hotels • Versatile solution to improve security in different environments such as schools, offices, hospitals, and restaurants • Includes 1 door chain with screws for easy installation