Material: Stainless steel. Product name: Door chain. The high-quality stainless steel is hand-brushed to ensure rust resistance and durability. Product Info:The stainless steel safety slide latch door chain guard choose 304 stainless steel stamping form material, have qualitative feel surface smooth, corrosion resistance, prevent birth rust; The Anti Theft Chain Door Latches can be used on a variety of door types and can be placed over or next to the door panel. Use: Door chain lock for revolving doors, opens access for a safe view. This chain latch allows you to partially open the door to identify visitors or receive packages. Easy to install: Chain Door Guard can be used on wooden or metal doors on a variety of door types. It can be placed above or next to the door panel. This latch is very easy to install and solid. Note: The data are all measured manually. Please allow an error of 1-3cm. Due to the difference between light and display, there is a certain color difference, which depends on the actual object receivedNote: Data are all measured manually, please allow for an error of 1-3cm. Due to differences in light and display, there may be a certain color difference, which is subject to the actual object received.