
There are still some people who don’t know the purpose of this small hole.
Currently, in the market, there are various types of locks with different appearances. These locks are used to secure gates, doors, cabinets, etc., to safeguard our belongings. If you look closely, you’ll often notice that locks usually have one or two small holes beside the keyhole. The reason for these …
There are still some people who don’t know the purpose of this small hole. Read More