Stainless Steel Security Door Chain Lock Heavy Duty Safety Guard with ScrewsProduct 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. 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.Package include:1 x Door ChainNote:1. Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures.2. Please allow 1-3cm error due to manual measurement. (1 inch = 2.54 cm)Thanks for your support :)