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

3. Cost Efficiency in Manufacturing

When plugs are manufactured, the holes serve as anchoring points during the molding process. This allows the prongs to be held in place and secured more effectively, contributing to the plug’s durability and reducing production costs.

4. Multipurpose Adaptations

Some adapters and devices use the holes for additional features, such as stabilizing attachments or testing the plug’s grounding. This adaptability showcases how a simple design element can support various innovations.

While these round holes might seem like a minor detail, their functionality highlights the thoughtful engineering behind everyday items. Now, the next time you plug in a device, you’ll know the hidden magic behind this often-overlooked feature!