NIUNIU Material - The safety door lock is made of stainless steel, strong and reliable, not easy to rust, wear-resistant and durable. Smooth surface - The surface of the chain lock is smooth and shiny, not easy to scratch or fade, comfortable to touch, and safe to use. Strong anti theft function - Anti theft steel chain can enhance security and provide reliable intrusion protection, spring buttons to enhance protection, and can not be unlocked outside, thus making you more secure. Application - Suitable for opening and closing of inner doors, sturdy and durable, and can be widely used for security and anti-theft of homes, hotels, apartments and courtyard doors. Quantity: 1pc Color: silver, there is a color difference between the real object and the picture Size: see picture for detailed size