CLEAR VISION: The door viewer is composed of 4 layers of HD optical glass. You can see the 220 degrees wide angle scene outside the door through the peephole. The lens is hardly fogged and damaged. HIGH-QUALITY MATERIAL: The structure of the Brushed Nickel door eye hole is made of High-quality materials, causing higher ability of rustproof and durability compared to those made of semimetal. PROTECT PRIVACY: There is a peephole cover on the door viewer to protect your privacy and , prevent someone from staring outside the door when you keep it as your front door peephole, avoid privacy leakage and theft accidents as much as possible. EASY INSTALLATION: The peephole for front door comes with matched drill bit (Φ 16 mm), which is compatible with door thickness from 1-3/8inch to 2-1/6inch(35mm-55mm).Even if you aren't good at handy work, you can easily complete the installation in 30 mins. Material: brass colour: bronze Package Contents: 1 x Peep Holes 1 x hole opener Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. CLEAR VISION: The door viewer is composed of 4 layers of HD optical glass. You can see the 220 degrees wide angle scene outside the door through the peephole. The lens is hardly fogged and damaged. HIGH-QUALITY MATERIAL: The structure of the Brushed Nickel door eye hole is made of High-quality materials, causing higher ability of rustproof and durability compared to those made of semimetal. PROTECT PRIVACY: There is a peephole cover on the door viewer to protect your privacy and , prevent someone from staring outside the door when you keep it as your front door peephole, avoid privacy leakage and theft accidents as much as possible. EASY INSTALLATION: The peephole for front door comes with matched drill bit (Φ 16 mm), which is compatible with door thickness from 1-3/8inch to 2-1/6inch(35mm-55mm).​Even if you aren't good at handy work, you can easily complete the installation in 30 mins.