Specification: Brand new Material: zinc alloy Diameter: approx. 16mm Fits Door Width: about 70mm - 130mm 200 degrees view Adjustable length With clear glass lens Sturdy constructionPackage included: 1 x door viewer Conversion: 1 mm = 0.0394 inch, 1 inch=25.4mm Note:the picture shown is a representation of the item,you'll receive from the available lot. Picture may appear larger on your screen. Color may vary slightly due to the color setting of each individual monitor.