HIGH QUALITY MATERIALOur stainless steel security chain is cast from high quality stainless steel and zinc alloy through strict production process. The product is polished and electroplated, it is not easy to rust and the color is uniform and bright, hard and durable. HIGH ANTI-THEFT PERFORMANCEThe high quality wear-resistant PU leather case connected to the stainless steel base of the security door chain reduces the impact of the chain link on the facade; whether it is a stainless steel case or PU leather, we are made of thicker materials, which greatly improves the anti-theft performance. ERGONOMIC DESIGNOur products are smooth and burr-free, anti-friction, anti-chemical and smoke reagents. Due to the very precise and high-quality production requirements, they can ensure quality and durability in wet weather and have a long service life. WIDE APPLICATIONThe chain lock allows you to partially open the door to identify visitors or receive packages. The door lock helps identify the caller before the door is fully released, providing more reliable protection for your home security, suitable for families, the door of an office or other places. SAFETY AND CONVENIENCEOur products have no sharp corners or edges, which can prevent children from being hit and injured at home; our products are also very conducive to children's personal safety and can prevent children from going out to explore secretly. CONTAIN: 1 * security door chain, 6 * screws