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There are two round holes on the plug, and their magical use is little known.

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  • Securing the plug promotes steady contact with the power source. These round holes also keep minors from messing with the outlet, exposing them to risk.
  • Many round-pronged plugs may not fit securely into outlets, leaving a portion of the prong exposed, which can be dangerous for tiny children. Therefore, it is advisable to use flat-pronged plugs with holes if you have little children.
  • Manufacturers often use the two holes in the prongs to affix seals, which helps customers distinguish between new and old items.
  • Furthermore, albeit small, these two circular holes enable producers to save a substantial quantity of steel, particularly during large manufacturing procedures.