HD Lens: HD optical glass lens offers 200 degree crystal clear view and super wide angle coverage. You can view the entire surrounding area from the top of the head to the feet of someone standing outside. The door peephole offers the highest quality security for you and your family.Anti-Peep Cover: The peephole has a 360-degree rotating privacy cover design. Closing the cover of the peep hole, visitors outside cannot see through the viewer into your home, offering the highest level of privacy for your protection and safety.High-Quality Materials: Our peephole for the front door is constructed from high-quality Zinc alloy materials, which are rustproof and sturdy, ensuring quality and durability.Easy Installation: Come with 16MM / 0.63Inch drill bit, the door viewers are suitable for doors 1-1/2" to 2-3/8" thick(40-65mm). Simply drill a suitably positioned 0.63inch diameter hole, insert the viewer into the hole then screw the two sides together and tighten by hand.After installed it, you could see a lot of the area.Wide Use: Modern security door viewer suitable for home, office, hotel, and front doors. It’s a must safety complement anywhere you need to view who is outside your door before opening. Product Description HOJLKLD Door Viewer Peephole 200 Degree Zinc Alloy with 16mm/0.63inch Drill Bit for 1-1/2" to 2-3/8" Doors Super Clear Wide-Angle View Optical lens with 200 degree visual angel offers a clear view with an extraordinary wide angle coverage. You can easily view the entire surrounding area from the top of the head to the feet of someone standing outside. It offers the highest security for you and your family. Thickened Anti-Peep Cover With rotating privacy cover, visitors outside cannot see through the viewer into your home,Used to allow a user to identify visitors from the security of a locked door, offering the highest level of privacy for your protection and safety. Easy to Install -- Come with 16MM Drill Bit Drill 0.63inch(16mm) diameter hole in doors.Unscrew the door viewer.Insert the front end of the door viewer outside the door and tighten it.Insert the back end of the door viewer into door and tighten it.Done.