Material:Stainless Steel Product Name: Door Chain The high quality stainless steel is hand brushed to ensure rust resistance and a long service life. Product information: stainless steel safety sliding latch door chain guard choose 304 stainless steel material stamping, have quality feel surface smooth, corrosion resistance, prevent birth rust; the anti-theft chain door latches can be used for a variety of door types and can be placed above or next to the door panel. It has a 5 inch long, 8 inch welded steel chain and all fittings required for complete installation Usage: door chain lock for hinged doors, opens access for safe viewing. This latch with chain allows you to partially open the door to identify visitors or receive packages. EASY TO INSTALL: Chain Door Guard can be used for 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. With four supplied mounting screws, no additional screws are required.