There are still people who do not know the use of this small hole

There are still people who do not know the use of this small hole (Page 2 ) | July 1, 2024

In addition to safety from rusting, the tiny hole on the bottom of a padlock fulfills another important role. Sometimes, the padlock may become stuck or unable to open, even with a key or correct code. As such, the hole can be lubricated synthetically to help the padlock pop open.