Allen wrenches and Hex keys seem very similar to each other. We break down the relationship between the two and some other ...

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 named W.G. Allen, ...

Allen wrenches, which are also called hex-key wrenches or hex keys, have a hexagonal cross section to fit various machine screws and set screws that have hexagonal-shaped recessed holes.

Hex wrenches — also known as Allen wrenches — are a great tool to have. Between assembling furniture or maintaining a bike, these are a must around the house. Grab a set of hex wrenches from ...

Allen wrenches and accompanying screws were quick, efficient, and reduced slippage. Best of all, the diminutive tool cost only pennies to make—a big reason it’s so pervasive.

Mulwark 17-Piece Folding Allen Wrench Set, $16 (was $29) at Amazon Get it! With over 3,400 five-star ratings, this Allen wrench set features 17 different hex metric and hex SAE sizes.