TOPINCN Home Security Optical Glass 220 Degree Wide Angle Door Scope Door Viewer High Quality Features: Made of advantageous copper material with plating process, corrosion resistant, more solid and durable. Adopts excessive expertise optical glass lenses to guarantee clearer view. 220 diploma wider perspective than the conventional door viewer. With a lid of 1.5mm thickness, hide the lenses by means of manually rotating the lid to properly protect your privacy. Fit for door thickness: 35mm to 60 mm, tube diameter: about 22mm, fit for hole diameter: 22mm to 25mm. Specifications: Condition: one hundred pc Brand New Material: Copper + Optical Glass Color: Brushed Silver, Red Bronze, Bronze, Gold(Optional) Fit for thickness of door: approx. 35~60mm / 1.38~2.36inch Tube Diameter: 22mm / 0.87inch Fit for Hole Diameter: approx. 22mm~25mm / 0.87~0.98inch Angle: 220° Weight: approx. 82g Package Included: 1 x Door Viewer How to Measure: Please participate the previous door viewer before everything and measure the size of hole; if there is not any door viewer, please measure the thickness of door. How to Install: 1. Depart the door viewer into 2 parts. 2. Insert the lenses from the outside of door. 3. Insert the bottom from the inside. 4. Tighten slot through palms or with the help of screwdriver.