【Sturdy and Durable】The stainless steel material ensures the rust-proof and durable properties of the entire door chain lock, has a smooth quality feel surface, corrosion resistance, and prevents rust from forming; while the thick solid chain, which also includes a leather sheath, provides double protection and traction can prevent what leads to breakage. 【Upgrade and Thicken Design】A thick stainless steel base and a bold chain combined with a stronger perforated installation give you a complete sense of security. It is very suitable for single women and the elderly. 【Improve Security】The locking door chain effectively protects the safety or privacy of your family. Theft protection and prevent your child from opening the door without permission or pets from running away from your home. 【Easy to Install】A door chain comes with screws for easy installation of the door latch. The protection lock can be used for different types of wooden doors and can be installed horizontally or