Quantity : 2 piecesColor: BlackHigh Quality Material: Our safety chain is made of high quality stainless steel and undergoes a strict production process. The product is polished, not easy to rust, uniform and bright in color, hard and durable. High-performance anti-theft: The high-quality wear-resistant PU leather cover is connected with the stainless steel base of the anti-theft door chain to reduce the impact of the chain link on the panel, whether it is stainless steel or PU. leather cover, we use thickened materials, which greatly improves anti-theft performance. Ergonomic design: our products are smooth and stain-free, resistant to friction, chemicals and smog reactions. Due to very precise and high quality production requirements, they ensure quality and durability in wet weather with a long service life.Safe and Convenient: Our products have no sharp corners or corners, this which can prevent children from being hit at home; our products are also very beneficial to children's personal safety, which can prevent children from sneaking out. Wide Application: Chain locks allow you to partially open doors to identify visitors or receive packages. The door lock helps identify callers before the door is fully released, providing more reliable protection for your home security, suitable for home use. Doors of offices or other places.