Feature: Delicate processing, design often, can play better protection. Suitable for door thickness: 35mm-60mm, suitable for doors, wooden doors, iron doors, bedroom doors. Easy to install, replace your door viewer in 5 minutes with no tools required. The lens will secure your home against burglary, intrusions and home invasion. A solid, heavy duty viewer cover increases your privacy. With the cover in place, visitors outside cannot see through the viewer into your home, offering the highest level of privacy for your protection and safety Specification: Condition: 100% New Color: Brushed Chrome/ Green Bronze / Red bronze / Gold (Optional) Material: Pure Copper Optical Glass Suitable for opening: diameter 28mm Suitable for door thickness: 35mm-60mm Size: As picture shown Package Included: 1 x Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.