What is That Little Hole At The Bottom of a Padlock For?

Brass Padlocks and Doorknobs

Brass is known to be anti-bacterial so it’s a popular metal for doorknobs, stair railings, padlocks, or other things people touch regularly.

Gas Indicator

It’s common for people to forget what side of their car the gas tank is on. Luckily, car manufacturers have accounted for that, adding an indicator as a reminder. Typically, the indicator is triangular, found near your gas gauge, and points to the correct side.

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