Are you looking for a professional, yet affordable door viewer? Are you in search of a sturdy, trustworthy tool that can do multiple jobs? If yes, look no further Our professional adjustabledoor viewer must meet your needs. It is one of the best choices for you. Features - Material: Zinc alloy. - Size: About4.50X3.80X2.50cm/1.77X1.49X0.98inch. - Its material is zinc alloy, high-quality door viewer and has a nice visual angle. - With the cover in place, no one from outside can see through the viewer into your home even with the reverse peephole. - It allows you to identify visitors from a locked door, offering the highest level of privacy for your protection and safety. - This door viewer can be adjusted in length to meet your different types of doors. - A must safety complement for home, office, hotel and anywhere you need to view who is outside your door before opening.