This door-viewer is what you're looking for. It's well made, easy to install, and provides a perfectly clear wide-angle view. The interior viewing hole is a good size to look out of, and the fancy little rotating cover provides piece of mind that no one can peek in.Its material is solid brass,high quality door viewer and has a nice 220-degree visual angle. After installed it,you could see a lot of the area. It offers the highest quality security for you and your family.Once installed, the viewer yields good results. It provides a clear, wide angle view. From the inside, viewing a person standing near the door, you can view the top of the head down to about waist level. With no one around the door, you can easily view the entire surrounding area.Sturdy Solid Brass metal with installation is a breeze.Suitable for 1-3/8" to 2-1/4" thick doors, simply drill a suitably positioned 0.63" diameter hole, insert the viewer into the hole then screw the two sides together and tighten by hand.Modern security door viewer and peep hole for doors. Perfect peephole for home, office, hotel and front door where you need to see, monitor, spy and peeking who is outside your door when the doorbell rings before opening, providing you extra privacy and safety. A must complement for any intercom system, security door monitor, door accessories.