Come with 5/8 Inch (16MM) Drill Bit Select the 1-3/8" to 2-3/8"(35-60mm) thick doors. Drill 5/8" (16mm) diameter hole in doors. Unscrew the door viewer. Insert the front end of the door viewer outside the door and tighten it. Insert the back end of the door viewer into door and tighten it. Done.

• Easy Installation: The peephole for front door comes with 5/8" (16mm) drill bit, the door viewers are suitable for doors 1-1/2" to 2-3/8" thick(35-60mm). Simply drill a suitably positioned 5/8 inch diameter hole, insert the viewer into the hole then screw the two sides together and tighten by hand.After installed it, you could see a lot of the area. (It is recommended to only drill half way on each side of the door several times slowly)
• Wide Use: The peep holes for door is suitable for home, office, hotel, and front doors. It’s a must safety complement anywhere you need to view who is outside your door before opening

Specifications

Common questions