Uxcell 200-degree Door Viewer Peephole w Cover for Thick Doors Part Solid Brass Silver Tone 1pcs 3

Brass door viewer has a 220-degree viewing range. It can be installed in a 16mm diameter hole in doors 35mm-60mm thick. Door viewers, also called peepholes, consist of a lens and cylinder which is inserted into a door, allowing a view outside. The amount of visibility is determined by the degree of the lens; the higher the number, the greater the visibility. Door viewers all consist 4 layers of optical lens, which offer you a 220-degree viewing range and crystal clear view. Perfect for home, office, hotel and front door where you need to see, monitor who is outside your door when the doorbell rings. Please pay attention to avoid scraping the glass on the door viewer when installing!