Most people have encountered an Allen wrench (or Allen key). It’s the L- or S-shaped tool with a six-sided head that can easily be gripped between your thumb and forefinger to assemble ...

Also known as hex keys, Allen wrenches are vital to any ... chances are the manufacturers included one or two of these handy ...

Bicycle-specific tool giant, Park Tool sends us their Sliding Hex Wrenches with some great features for review, and they are ...