If you have any questions, please consult usAnti theft steel chain can enhance security and provide reliable intrusion protection, spring buttons to enhance protection.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.Material: stainless steelLength:as the picturePackage included:10 x Security door chain with screwsNotes:1. Due to the differences between different monitors, the picture may not reflect the actual color of the item.2. Compare the detailed size with your size, please allow a slight difference due to manual measurement.Buy with confidence, we have high-quality after-sales service