The special key has a hidden use many people might not have realised, in fact, some are only just learning the news after 64 years. So have you got any idea what it's used for?
16:27, 17 Jun 2026 Updated 16:47, 17 Jun 2026
You might not have realised this special key has a hidden function. It's no secret social media has become a haven for learning new mind-blowing discoveries.
Just recently, Aldi shoppers only just realised what the supermarket's name means – with some taking 64 years to learn it. But now turning our attention away from big supermarket chains, people's minds are blown after noticing a hidden feature in a special key used for DIY. Whether you like to bash out your own work at home, or call an expert in, most people will have noticed this feature, so do you have any clue?
On X, the popular account known as Today Years Old, which has over 1million followers, shared a clip being used. In the post, it asked: "How old were you when you discovered what this is for?"
Since it was shared, it racked up 1.6million views, 7,000 likes and over 600 retweets from equally amazed people.
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The video explains this special key, known as a spade drill bit, is traditionally used in carpentry for drilling round shapes in wood, and the hole serves an important function.
It allows for a pin to be inserted, effectively transforming the key into a compass for drawing perfect circles.
This DIY gem showcased just how handy the key can be, as someone completes what looks like the most impeccable circle you might ever see with the aid of this feature.
And clearly, this was news to many, as a host of comments showed users couldn't believe they hadn't realised this before.
One wrote: "I was 64 when I learned." Another added: "Well, it was today. So that's how old I was." And a third confessed: "About 15 seconds into this video."
Someone else commented: "What? No way!" And someone else wrote: "
The little-known purpose of the tool key revealed
The key with a hole can work as a brilliant DIY compass to draw the perfect circle. The hole acts as the centre point, while the pencil placed at a set distance can serve as your drawing edge.
Try these easy steps to set it up:
1. Secure the centre point: Place the key flat on your material, add a pushpin, small nail or tack through the keyring hole to anchor the key firmly to the exact centre.
2. Measure your radius: Take a rule and measure from the centre of the key's hole to the tip of the pencil. This can determine your circle's radius.
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3. Lock the pencil distance: While holding the key securely in place, trace the arc around the centre pivot point using the pencil.
Read the full article at Daily Mirror →
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