Description If you are looking for a professional and reasonably door viewer, then your research is here. That's because our products can meet your needs. It is made of premium materials and craftsmanship, durable and practical, and can provide you with stable working performance. Features - Material: Zinc Alloy + Copper. - Made of sturdy zinc alloy and copper materials, durable and professional, easy to install. - This security door viewer is adjustable can come with a cover, you can close it when not in used. - Insert the door viewer into the hole, then screw the two portions together. - The 200 degree large wide-angle provide a clear vision, improves the anti-theft performance. - It's suitable for all kinds of door, such as wooden doors, iron doors, living room doors, hotel door, etc. Made of sturdy zinc alloy and copper materials, durable and professional, easy to install. This security door viewer is adjustable can come with a cover, you can close it when not in used. Insert the door viewer into the hole, then screw the two portions together. The 200 degree large wide-angle provide a clear vision, improves the anti-theft performance. It's suitable for all kinds of door, such as wooden doors, iron doors, living room doors, hotel door, etc.