Description: - Made of resin lens and zinc alloy, ensuring and durability - Optical lens with 200-degree visual angel provides a crystal clear view with an extraordinary wide angle coverage. - Privacy cover design can prevent outside people peeping through the viewer, providing you the hightest level of pricacy of your protection and safety. - Pipe diameter is adjuastable and peephole is easy to install. - Suitable for anydoor within 35-60mm/1.38-2.36 Inch thick.Specification: - Material: Resin Lens+Zinc Alloy - Top Diameter: Approx. 31.2Mm/1.23Inch - Botton Diameter: Approx. 24Mm/0.94Inch - Pipe Diameter: Approx. 16Mm/0.63Inch - Total Length: Approx. 50Mm/1.97Inch - Inner Height: Approx. 36Mm/1.42Inch - Application: 35-60mm/1.38-2.36 Inch thick. - Viewing Angle: 200Package Includes: 1 PeepholeSelect the appropriate size of peephole according to the actual size of the hole on the door. Only need two sizes: hole diameter + door thickness.If you want to prevent your door viwer from being unscrewed by outside people, please put some tape on the screw-thread of the door viwer.Since the size above is measured by hand, the size of the actual item could be slightly different from the size above.Due to the lighting effects, monitor settings. There could be some slight difference in the color tone of the pictures and the actual item.