An Allen wrench (also called an Allen key) is just a brand name for what is more generally called a hex key. This is an ...

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We may receive a commission on purchases made from links. The Allen wrench, also known as a hex key, is a L-shaped hand tool with hexagonal (six-sided) ends. It all started with a Connecticut inventor ...

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If you're like us, you have a toolbox drawer full of loose hex keys that have no rhyme or reason. Over the years, you've collected hex keys from random tool kits at Christmas and just thrown them into ...

We may receive a commission on purchases made from links. Building out a tool arsenal for at-home or work use can be a fun undertaking. You can look around and pick and choose the tools you want and ...

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, ...