Perfect view - The antique look door spy hole, with its large 200 degree wide angle, offers you a crystal-clear view and reliably protects your privacy thanks to the integrated cover cap. Easy installation - The security door viewer comes with clear installation instructions and a video demonstration. Once a 16mm hole has been drilled, the front door viewer can be easily screwed in. Highest Quality - The special material selection of the peep hole , combined with the High Quality standards of Stoppwerk, guarantees a High- Quality, real glass lense door viewers at a low price Universal suitable - Due to its special design, our spy holes for doors can be installed in doors with a minimum thickness of 35mm to a maximum of 55mm. Very nice door peephole. Easy operation - Our front door peepholes can be used intuitively by every person in the household. Thanks to the scratch-resistant glass surface, the risk of damage is minimized. Your new door spyhole