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 L-shaped bar that has a hexagonal shape that fits into screws with hex-shaped ...

We all know the feeling. You’ve just come home from Ikea or Target or wherever you like to buy your furniture, and once you’ve unloaded the boxes, you recognize the Sisyphean task ahead of you: ...