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 ...

So how did Allen enter into it? Like most non-proprietary consumer products ... with two heads on opposite sides of the ...

Investigate the cause of a misfit before applying full torque. All Allen wrenches are intended to turn fasteners with an insert hex head. When selecting an Allen wrench set, spend a little ...