Features: - Easy to install, replace your door viewer in 5 minutes and not using a instruments required. - The lens will safe your home opposed to burglary, intrusions and residential invasion. Specification: Brand new and high quality! Type: Peephole Material: Zinc alloy + Resin lenses Suitable for opening: diameter 16mm/26mm Suitable for door thickness: 40mm-55mm/46mm-76mm Degree: two hundred Quantity: 1pc Package included: 1 x Peephole