2 Pieces Door Viewer, Peephole Door Viewer with Privacy Cover, 200 Degree Anti-theft Angle, Security, for Home, Office, Hotel Color Style and Size: Silver , pipe diameter 14mm, suitable for door thickness 47-75mm. MaterialOur anti-theft cat eye is carefully designed and made of zinc alloy + optical glass, with good quality and reliable use. Easy to install Peephole Replace your peephole in 5 minutes without tools. 200 degrees Viewing angle provides security to identify visitors after locking the door, you can easily see the whole area of people outside from head to toe. High quality optics with 200 degree viewing angle provide a crystal clear field of vision and excellent wide angle coverage. Wide ApplicationOur anti-theft cat eye is suitable for doors with a thickness of 47-75mm, suitable for doors, wooden doors, iron doors and bedroom doors. Size18*21*47mm. The lenses protect your home from burglaries, intruders and home invasions. It is corrosion resistant and more durable. Using high-tech optical glass lenses, the vision is clearer. 200 degree200 degree beautiful viewing angle provides security to identify visitors behind locked doors. The lens will protect your home from burglaries and home invasions. Back CoverThe viewer has a thick cover that manually rotates to cover the lens to protect your privacy. Easy InstallationSuitable for 47-75mm thick doors, just drill a 21mm diameter hole, insert the viewer into the hole, screw the two sides together and tighten by hand. No tools required. Wide UseFine processing, suitable for doors, wooden doors, iron doors, bedroom doors. how to install: 1. Exit the two-part door peephole. 2. Insert the lens from the outside of the door. 3. Insert the base from the inside. 4. Tighten the slot by hand or with a screwdriver.