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.

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Hex wrenches, also known as Allen keys, are the tools you use to screw and unscrew fasteners that have a hexagonal recess (as opposed to a Phillips or flathead recess). Hex screws are commonly used on ...

You could amass an irregular collection of Allen wrenches by saving the ones that come with build-it-yourself furniture, but the way to actually have every hex key you need on hand is to get a nice, ...