Another Reason for the Padlock Design
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.
Other Everyday Things With ‘Hidden Features’
Padlocks aren’t the only thing that has been designed with secret or hidden features. Here are a few other handy items that serve multiple purposes.
Screwdrivers as Wrenches
Knowing how to work on cars is a helpful skill, especially with the rising number of vehicles on the road. Yet most mechanics agree that working on cars can be tough because of the small space and crevices that must be maintained. Fortunately, most screwdrivers can be slid into a wrench to help reach those small spaces.
