Although best known for its meatballs and maze-like warehouse stores, there’s one Ikea product that its customers never intentionally buy but almost always leave the store with: an Allen key, the ...

If you've ever bought a piece of flatpack furniture before, you probably have a couple of Allen keys lying around in your toolbox. You've probably also misplaced the tiny tool a couple of times, ...

We may receive a commission on purchases made from links. Whether you're assembling a furniture kit or doing maintenance on your bike, you surely know how annoying it can be to work with an Allen key.

Ever wondered why there isn't an Allen key (or hex key, if you prefer) equivalent to the adjustable wrench or spanner? Turns out it's actually quite a complex engineering challenge. But this is 2025, ...